Mauro Fernandes Pereira

RESEARCH INTERESTS

Nonequilibrium Many Body Theory of Transport and Optics in Semiconductors; Nonlinear Optics; GHz-THz-Mid Infrared generation, detection and applications

Scopus Publications

An efficient and compact mid-infrared polarization splitter and rotator based on a bifurcated tapered-bent waveguide
Humaira Zafar and M. F. Pereira
Springer Science and Business Media LLC



Recent Progress in Light Polarization Control Schemes for Silicon Integrated Photonics
Humaira Zafar and Mauro F. Pereira
Wiley
AbstractLight polarization control is a target in photonics, and this paper provides a comprehensive review of research from various groups on the silicon‐on‐insulator (SOI) platform. It draws comparisons between devices such as polarization splitters (PS), polarizers, and polarization splitters/rotators (PSR). These devices are fabricated using various technologies, including silicon nanowires, ridge waveguides, hybrid plasmonic waveguides, and subwavelength grating (SWG) waveguides. A detailed review of polarizers used as cleanup filters in splitters is initiated. Subsequently, various polarization splitters utilizing asymmetric directional couplers (ADCs), which typically exhibiting low extinction ratios (ERs), are delved. To enhance ERs, a detailed comparison of methods outlined in the literature is provided. One notable method includes integrating on‐chip polarizers at both ports to eliminate unwanted light fractions and achieve exceptionally high ERs. Furthermore, SWG‐based polarizers and splitters commonly face issues with Bragg reflections that can affect other photonic devices and lasers and ways to minimize unwanted polarization back reflections in SWG‐designed polarization control devices are examined. Finally, emerging applications in mid‐infrared (MIR) sensing are explored, highlighting the necessity of polarization rotators for on‐chip transverse electric (TE) operation, since quantum cascade lasers, the primary sources in this range, emitting radiation in the (TM) mode.


Photoacoustic Spectroscopy Using a Quantum Cascade Laser for Analysis of Ammonia in Water Solutions
Apostolos Apostolakis, Guillaume Aoust, Grégory Maisons, Ludovic Laurent, and Mauro Fernandes Pereira
American Chemical Society (ACS)
Ammonia (NH3) toxicity, stemming from nitrification, can adversely affect aquatic life and influence the taste and odor of drinking water. This underscores the necessity for highly responsive and accurate sensors to continuously monitor NH3 levels in water, especially in complex environments, where reliable sensors have been lacking until this point. Herein, we detail the development of a sensor comprising a compact and selective analyzer with low gas consumption and a timely response based on photoacoustic spectroscopy. This, combined with an automated liquid sampling system, enables the precise detection of ammonia traces in water. The sensor system incorporates a state-of-the art quantum cascade laser as the excitation source emitting at 9 μm in resonance with the absorption line of NH3 located at 1103.46 cm–1. Our instrument demonstrated detection sensitivity at a low ppm level for the ammonia molecule with response times of less than 60 s. For the sampling system, an ammonia stripping solution was designed, resulting in a prompt full measurement cycle (6.35 min). A further evaluation of the sensor within a pilot study showed good reliability and agreement with the reference method for real water samples, confirming the potential of our NH3 analyzer for water quality monitoring applications.


Controlling Vertical Asymmetry of Nanocrystals Through Anisotropic Etching-Assisted Nanosphere Lithography
Arnab Ganguly, Humaira Zafar, Calvyn Travis Howells, Mauro Fernandes Pereira, and Gobind Das
Wiley
Nanosphere lithography, a low‐cost fabrication technique, depends on the self‐assembly of nanoscale features to create nanostructures in a hexagonally close‐packed structure. In this article, the fabrication of 3D nanostructures over a large surface‐area with anisotropy along the growth direction through the combination of chemical and physical plasma etching is reported. The anisotropy stems from etching the nanosphere mask and the substrate at different rates. Due to the dynamic masking effect, a systematic variation of etching time gives rise to intriguing nanostructures with sharp edges that have strong potential for plasmonic applications, with the possibility of manipulating electromagnetic radiation. The structures obtained include nanocylinders, truncated hexagon‐based pyramids, circular pads on a conical base, and nanocones from a single‐layer nanosphere mask. Simulations of the fabrication process offer further insight into the understanding of nanostructure formation. A good agreement between predicted results and experiments confirms the potential of our numerical design. In addition, the optical properties of the nanostructures are investigated by UV–vis and the experimental findings are consistent with simulations based on a finite‐difference time‐domain method. The nanostructures described in this study contribute to the emerging 3D plasmonics and 3D magnonics, with strong potential for a significant impact on biosensor applications.


A Novel Mid-Infrared Transverse Magnetic Mode Pass Periodic Waveguide Polarizer with Low Reflections
Humaira Zafar and M. F. Pereira
Institute of Electrical and Electronics Engineers (IEEE)



Progress in analytical solutions for high order harmonic generation in semiconductor superlattice multipliers
Abdullah Al-Ateqi and Mauro Fernandes Pereira
Springer Science and Business Media LLC



Erratum: Author Correction: Sensing nitriles with THz spectroscopy of urine vapours from cancers patients subject to chemotherapy (Scientific reports (2022) 12 1 (18117))
Vladimir Vaks, Vladimir Anfertev, Maria Chernyaeva, Elena Domracheva, Anton Yablokov, Anna Maslennikova, Alla Zhelesnyak, Alexei Baranov, Yuliia Schevchenko, and Mauro Fernandes Pereira
Springer Science and Business Media LLC



Compact and Broadband Adiabatically Bent Superlattice-Waveguides With Negligible Insertion Loss and Ultra-Low Crosstalk
Humaira Zafar, Bruna Paredes, Inas Taha, Juan E. Villegas, Mahmoud Rasras, and Mauro F. Pereira
Institute of Electrical and Electronics Engineers (IEEE)
Broadband and ultra-low crosstalk integrated silicon superlattice waveguides are proposed and demonstrated, enabling high-density waveguide integration. The superlattice waveguides are implemented as S-shaped adiabatic bends that yield ultra-low crosstalks in the neighboring channels, and an extremely low insertion loss, for the TE polarization. Special materials or complex fabrication steps are not required. The bent superlattice waveguides are measured to have an average insertion loss <inline-formula><tex-math notation="LaTeX">$\\leq$</tex-math></inline-formula> 0.1 dB for all channels. The average crosstalk values are <inline-formula><tex-math notation="LaTeX">$\\leq$</tex-math></inline-formula> −37.8 dB and <inline-formula><tex-math notation="LaTeX">$\\leq$</tex-math></inline-formula> -45.2 dB, in the first nearest neighboring waveguide and the second nearest neighboring waveguide, respectively. The transmission spectra are measured over the wavelength ranges of (1.24 μm to 1.38 μm) and (1.45 μm to 1.65 μm), covering both communication wavelengths of 1310 and <inline-formula><tex-math notation="LaTeX">$1550 \\,\\mathrm{n}\\mathrm{m}$</tex-math></inline-formula>. The simulation results predict an efficient broadband performance over the <inline-formula><tex-math notation="LaTeX">$500 \\,\\mathrm{n}\\mathrm{m}$</tex-math></inline-formula> wavelength range (<inline-formula><tex-math notation="LaTeX">$1200 \\,\\mathrm{n}\\mathrm{m}$</tex-math></inline-formula> to <inline-formula><tex-math notation="LaTeX">$1700 \\,\\mathrm{n}\\mathrm{m}$</tex-math></inline-formula>), covering all O, E, S, C, L & U bands. The proof of concept was done for a silicon-on-insulator platform and the approach is applicable to other waveguide geometries and integrated photonic platforms.


O-band TE- and TM-mode densely packed adiabatically bent waveguide arrays on the silicon-on-insulator platform
Humaira Zafar, Bruna Paredes, Juan Villegas, Mahmoud Rasras, and Mauro Fernandes Pereira
Optica Publishing Group
An efficient, dual-polarization silicon waveguide array with low insertion losses and negligible crosstalks for both TE and TM polarizations has been reported using S-shaped adiabatically bent waveguides. Simulation results for a single S-shaped bend show an insertion loss (IL) of ≤ 0.03 dB and ≤ 0.1 dB for the TE and TM polarizations, respectively, and TE and TM crosstalk values in the first neighboring waveguides at either side of the input waveguide are lower than −39 dB and −24 dB, respectively, over the wavelength range of 1.24 µm to 1.38 µm. The bent waveguide arrays exhibit a measured average TE IL of ≈ 0.1 dB, measured TE crosstalks in the first neighboring waveguides are ≤ −35 dB, at the 1310 nm communication wavelength. The proposed bent array can be made by using multiple cascaded S-shaped bends to transmit signals to all optical components in integrated chips.


A robust nonlinear model of steam reformers with applications to energy efficiency
Renan de S. Teixeira, Mauro F. Pereira, and Jorge P. Zubelli
Elsevier BV



Sensing nitriles with THz spectroscopy of urine vapours from cancers patients subject to chemotherapy
Vladimir Vaks, Vladimir Anfertev, Maria Chernyaeva, Elena Domracheva, Anton Yablokov, Anna Maslennikova, Alla Zhelesnyak, Alexei Baranov, Yuliia Schevchenko, and Mauro Fernandes Pereira
Springer Science and Business Media LLC
AbstractA THz nonstationary high-resolution spectrometer based on semiconductor superlattice multipliers is applied to investigate the dynamics of urine composition for cancer patients treated with chemotherapy. The molecular urine composition of healthy volunteers and cancer patients was compared and contrasted. We have found a set of nitriles that either appeared after chemotherapy or increased in content, which are expected as a result of bio-chemical damage to the liver. While no damage can be detected at this stage by existing clinical methods, the identified nitriles are candidates for further large-scale systematic testing towards markers for nephrotoxicity of chemotherapy at an early stage of the treatment, when conventional diagnostics cannot identify substantial organ damage. Comparing the metabolite concentration dynamics with side effects during chemotherapy might then help individuate patients prone to severe complications and correct the treatment. Our devices are game-changers for THz spectroscopy of liquids: they allow spanning four different frequency ranges for a general evaluation of most substances found in the liquid and selecting a spectral interval that bypasses the strong absorption lines from substances such as water and ammonia, which may otherwise mask the detection of the target metabolites.


Harmonic Generation in Biased Semiconductor Superlattices
Mauro Fernandes Pereira
MDPI AG
Semiconductor superlattices are proven nanomaterials for THz nonlinear optics by means of high order harmonic generation. Seminal approaches leading to a perfectly antisymmetric current-voltage (I–V.) curve predict the generation of odd harmonics only in the absence of a bias. However, even harmonics at high orders have been detected in several experiments. Their generation has been explained by considering deviations from the current flow symmetry that break the exact antisymmetry of the I–V. curve. In this paper, we focus on another issue found experimentally that has also not been explained, namely the harmonic power output asymmetry from negative to positive applied bias. Once more, breaking the I–V. flow symmetry explains the experiments and leads to a further tool to design the power output of these materials. Furthermore, a new approach for the Boltzmann Equation under relaxation-rate approximation eliminates numerical difficulties generated by a previous theory. This leads to very efficient analytical expressions that can be used for both fundamental physics/optics/material sciences and realistic device development and simulations.


Compact broadband ( O, E, S, C, L &amp; U bands) silicon TE-pass polarizer based on ridge waveguide adiabatic S-bends
Humaira Zafar, Yanfen Zhai, Juan E. Villegas, Florent Ravaux, Kenneth L. Kennedy, Mauro F. Pereira, Mahmoud Rasras, Atif Shamim, and Dalaver H. Anjum
Optica Publishing Group
A compact, ultra-broadband and high-performance silicon TE-pass polarizer is proposed and demonstrated experimentally. It is based on partially-etched (ridge) waveguide adiabatic S-bends, input/output tapers and side gratings on a silicon-on-insulator (SOI) platform. A compact footprint and weak back reflections are obtained due to the bent waveguide and the tapers, respectively. An extremely high extinction ratio is achieved by scattering the undesired light in the slab section using the side gratings. The 3D FDTD simulations show a TE loss less than 0.3 dB and an extinction ratio greater than 30 dB over a 500 nm wavelength range (1200 nm to 1700 nm). Measured results show a high TM loss (> 35 dB) and a low TE insertion loss (< 1.5 dB), over a 200 nm wavelength range (1450 nm to 1650 nm). The measured TE loss is < 0.6 dB at a communication wavelength of 1550 nm. The footprint of the optimized design is 65 µm × 20 µm.


Improving Water Quality and Security with Advanced Sensors and Indirect Water Sensing Methods
Philippe Cousin, Anastasia Moumtzidou, Anastasios Karakostas, Lefteris Gounaridis, Christos Kouloumentas, Mauro Fernandes Pereira, Apostolos Apostolakis, Paula Gorrochategui, Guillaume Aoust, and Bérengère Lebental
Springer International Publishing



Controlling Nonlinearities in Semiconductor Superlattice Multipliers
M.F. Pereira and A. Apostolakis
IEEE
A hybrid approach combining Nonequilibrium Green’s Fuctions with solutions of the Boltzman equation, delivers voltage and intrinsic asymmetry control of nonlinearities in semiconductor superlattices. Unexpected nonlinear behavior is predicted for high harmonics as a result of voltage control.


Combined structural and voltage control of giant nonlinearities in semiconductor superlattices
Mauro Fernandes Pereira and Apostolos Apostolakis
MDPI AG
Recent studies have predicted a strong increase in high harmonic emission in unbiased semiconductor superlattices due to asymmetric current flow. In parallel, an external static bias has led to orders of magnitude control of high harmonics. Here, we study how this control can affect the operation of superlattice multipliers in a range of input frequencies and powers delivered by commercially available GHz sources. We show that the strongly nonlinear behavior can lead to a very complex scenario. Furthermore, it is natural to ask what happens when we combine both asymmetry and voltage control effects. This question is answered by the simulations presented in this study. The efficiency of high-order even harmonics is increased by the combined effects. Furthermore, the development of ‘petals’ in high-order emission is shown to be more easily achieved, opening the possibility to very interesting fundamental physics studies and more efficient devices for the GHz–THz range.


Recent advances in superlattice frequency multipliers
Yuliaa Schevchenko, Apostolos Apostolakis, and Mauro F. Pereira
Springer Netherlands



Preface




On the prospect of application of point-contact sensors to solving the global security problems: An analytical review
G. Kamarchuk, A. Pospelov, A. Savytskyi, V. Gudimenko, V. Vakula, A. Herus, D. Harbuz, L. Kamarchuk, and M. F. Pereira
Springer Netherlands



Fabrication-tolerant and CMOS-compatible polarization splitter and rotator based on a compact bent-tapered directional coupler
Humaira Zafar, Mauro Fernandes Pereira, Kenneth L. Kennedy, and Dalaver Hussain Anjum
AIP Publishing
In this paper, we demonstrate a broadband, low-loss, compact, and fabrication-tolerant polarization splitter and rotator (PSR) on a silicon-on-insulator platform. The PSR is based on an asymmetric directional coupler (ADC), which is covered with SiO2 from the top to make it compatible with the standard metal back end of line (BEOL) process. Conventional ADC-based PSRs suffer from stringent fabrication requirements and relatively low bandwidth, while the proposed bent-tapered design is highly insensitive to the fabrication errors (＞70 nm tolerance on the coupling gap) with an enlarged bandwidth and a compact footprint of 53 µm × 7 µm. It yields a polarization conversion loss less than 0.7 dB, a transverse electric (TE) insertion loss better than 0.3 dB, an ultra-low crosstalk with the TE extinction better than 30 dB, and the transverse magnetic extinction better than 25 dB, over a 200 nm wavelength range (1.5 µm–1.7 µm), in both ports. At the 1.55 µm wavelength, the calculated ultra-low polarization conversion loss and TE insertion loss are 0.27 dB and 0.08 dB, respectively.


Giant controllable gigahertz to terahertz nonlinearities in superlattices
M. F. Pereira, V. Anfertev, Y. Shevchenko, and V. Vaks
Springer Science and Business Media LLC
Abstract Optical nonlinearities are of perpetual importance, notably connected with emerging new materials. However, they are difficult to exploit in the gigahertz–terahertz (GHz–THz) range at room temperature and using low excitation power. Here, we present a clear-cut theoretical and experimental demonstration of real time, low power, room temperature control of GHz–THz nonlinearities. The nonlinear susceptibility concept, successful in most materials, cannot be used here and we show in contrast, a complex interplay between applied powers, voltages and asymmetric current flow, delivering giant control and enhancement of the nonlinearities. Semiconductor superlattices are used as nonlinear sources and as mixers for heterodyne detection, unlocking their dual potential as compact, room temperature, controllable sources and detectors. The low input powers and voltages applied are within the range of compact devices, enabling the practical extension of nonlinear optics concepts to the GHz–THz range, under controlled conditions and following a predictive design tool.


Superlattice nonlinearities for Gigahertz-Terahertz generation in harmonic multipliers
Apostolos Apostolakis and Mauro F. Pereira
Walter de Gruyter GmbH
AbstractSemiconductor superlattices are strongly nonlinear media offering several technological challenges associated with the generation of high-frequency Gigahertz radiation and very effective frequency multiplication up to several Terahertzs. However, charge accumulation, traps and interface defects lead to pronounced asymmetries in the nonlinear current flow, from which high harmonic generation stems. This problem requires a full non-perturbative solution of asymmetric current flow under irradiation, which we deliver in this paper within the Boltzmann-Bloch approach. We investigate the nonlinear output on both frequency and time domains and demonstrate a significant enhancement of even harmonics by tuning the interface quality. Moreover, we find that increasing arbitrarily the input power is not a solution for high nonlinear output, in contrast with materials described by conventional susceptibilities. There is a complex combination of asymmetry and power values leading to maximum high harmonic generation.


Materials for nonlinear optics in the GHz-THz range
A. Apostolakis and M. F. Pereira
IEEE
This talk starts with an outline of our hybrid approach combining Nonequilibrium Green's Functions with the Boltzmann equation for the nonlinear response of semiconductor superlattices. The nonlinearities are controllable and very good agreement has been found between theory and experiments. Next, we address the efficiency of the superlattices as frequency multipliers and their feasibility for room temperature THz radiation sources based on multiplication of GHz inputs.


Potential and limits of superlattice multipliers coupled to different input power sources
Apostolos Apostolakis and Mauro F. Pereira
SPIE-Intl Soc Optical Eng
Abstract. A theoretical study is presented to assess the performance of semiconductor superlattice (SL) multipliers as a function of the currently available input power sources. The prime devices that are considered as input power sources are Impatt diodes, InP Gunn devices, SL electron devices, and backward wave oscillator sources. These sources have been successfully designed to deliver input radiation frequencies in the range from 0.1 to 0.5 THz. We discuss the harmonic power generation of both odd and even harmonics by implementing an ansatz solution stemmed from a hybrid approach combining nonequilibrium Green’s functions and the Boltzmann kinetic equation.


Numerical studies of superlattice multipliers performance
Apostolos Apostolakis and Mauro F. Pereira
SPIE
This paper implements a simple optical method to forecast power output of superlattice multipliers which are subjected to an external GHz-THz field. These results complement a recent study which addressed the harmonic conversion efficiency in semiconductor superlattices by interface roughness design. Applying a strong ac field on such a device pumps energy into the system, which is then converted to radiation at harmonics of the pump frequency. Here we investigate the odd harmonics generation in an unbiased superlattice at room temperature, after excitation by input signals in a wide frequency range which can provided by realistic devices.

RECENT SCHOLAR PUBLICATIONS

An efficient and compact mid-infrared polarization splitter and rotator based on a bifurcated tapered-bent waveguide
H Zafar, MF Pereira
Sci Rep 15 (doi.org/10.1038/s41598-025-89420-3), 5160 2025



Photoacoustic Spectroscopy Using a Quantum Cascade Laser for Analysis of Ammonia in Water Solutions
A Apostolakis, G Aoust, G Maisons, L Laurent, MF Pereira
ACS Omega 2024



A novel mid-infrared transverse magnetic mode pass periodic waveguide polarizer with low reflections
H Zafar, MF Pereira
IEEE Access 2024



Recent Progress in Light Polarization Control Schemes for Silicon Integrated Photonics
H Zafar, MF Pereira
Laser Photonics Rev, 2301025-1 -2301025-29 2024



Sensing nitriles with THz spectroscopy of urine vapours from cancers patients subject to chemotherapy (vol 12, 18117, 2022)
V Vaks, V Anfertev, M Chernyaeva, E Domracheva, A Yablokov, ...
SCIENTIFIC REPORTS 13 (1) 2023



Controlling Vertical Asymmetry of Nanocrystals Through Anisotropic Etching-Assisted Nanosphere Lithography
A Ganguly, H Zafar, CT Howells, G Pereira, M.F. and Das
Small Structures, 2300300 2023



Progress in analytical solutions for high order harmonic generation in semiconductor superlattice multipliers
A 1. Al-Ateqi, MF Pereira
Opt Quant Electron 55 (1287) 2023



O-band TE- and TM-mode densely packed adiabatically bent waveguide arrays on the silicon-on-insulator platform
H Zafar, B Paredes, J Villegas, M Rasras, MF Pereira
Opt. Express 31, 21389-21398 2023



Compact and broadband adiabatically bent superlattice-waveguides with negligible insertion loss and ultra-low crosstalk
H Zafar, B Paredes, I Taha, JE Villegas, M Rasras, MF Pereira
IEEE Journal of Selected Topics in Quantum Electronics 2023



Improving Water Quality and Security
P Cousin, A Moumtzidou, A Karakostas, L Gounaridis, C Kouloumentas, ...
Instrumentation and Measurement Technologies for Water Cycle Management, 251 2022



Improving water quality and security with advanced sensors and indirect water sensing methods
P Cousin, A Moumtzidou, A Karakostas, L Gounaridis, C Kouloumentas, ...
Instrumentation and Measurement Technologies for Water Cycle Management, 251-277 2022



A Robust Nonlinear Model of Steam Reformers with Applications to Energy Efficiency
R de S.Teixeira, MF Pereira, JP Zubelli
Chemical Engineering Research and Design 2022



Sensing nitriles with THz spectroscopy of urine vapours from cancers patients subject to chemotherapy
V Vaks, V Anfertev, M Chernyaeva, E Domracheva, A Yablokov, ...
Sci Rep 12 (doi.org/10.1038/s41598-022-22783-z), 18117 (2022) 2022



Harmonic Generation in Biased Semiconductor Superlattices
MF Pereira
Nanomaterials 12, 1504 2022



Compact broadband ( O, E, S, C, L \& U bands) silicon TE-pass polarizer based on ridge waveguide adiabatic S-bends
H Zafar, Y Zhai, Villegas, J E., R Florent, KL Kenneth L. Kennedy, ...
Opt. Express 30, 10087-10095 2022



Controlling Nonlinearities in Semiconductor Superlattice Multipliers
MF Pereira, A Apostolakis
IEEE Explore, 149-150 2021



Combined Structural and Voltage Control of Giant Nonlinearities in Semiconductor Superlattices
MF Pereira, A Apostolakis
Nanomaterials 11, 1287 2021



Terahertz (THz), Mid Infrared (MIR) and Near Infrared (NIR) Technologies for Protection of Critical Infrastructures Against Explosives and CBRN
MF Pereira, A Apostolakis
https://doi.org/10.1007/978-94-024-2082-1 2021



On the Prospect of Application of Point-Contact Sensors to Solving the Global Security Problems: An Analytical Review
PMF Kamarchuk G, Pospelov A, Savytskyi V, Gudimenko V, Vakula A, Herus D ...
Terahertz (THz), Mid Infrared (MIR) and Near Infrared (NIR) Technologies for 2021



Recent Advances in Superlattice Frequency Multipliers
PMF Schevchenko Y., Apostolakis A.
Terahertz (THz), Mid Infrared (MIR) and Near Infrared (NIR) Technologies for 2021

MOST CITED SCHOLAR PUBLICATIONS

Nonequilibrium many body theory for quantum transport in terahertz quantum cascade lasers
T Schmielau, MF Pereira
Applied Physics Letters 95 (23) 2009
Citations: 128



Microscopic theory for the influence of Coulomb correlations in the light-emission properties of semiconductor quantum wells
MF Pereira Jr, K Henneberger
Physical Review B 58 (4), 2064 1998
Citations: 103



Controlling many-body effects in the midinfrared gain and terahertz absorption of quantum cascade laser structures
MF Pereira Jr, SC Lee, A Wacker
Physical review B 69 (20), 205310 2004
Citations: 83



Theory and measurements of harmonic generation in semiconductor superlattices with applications in the 100 GHz to 1 THz range
MF Pereira, JP Zubelli, D Winge, A Wacker, AS Rodrigues, V Anfertev, ...
Physical Review B 96 (4), 045306 2017
Citations: 70



Intervalence transverse-electric mode terahertz lasing without population inversion
MF Pereira Jr
Physical Review B—Condensed Matter and Materials Physics 78 (24), 245305 2008
Citations: 54



Intersubband antipolaritons: Microscopic approach
MF Pereira Jr
Physical Review B—Condensed Matter and Materials Physics 75 (19), 195301 2007
Citations: 54



Exciton binding energies in semiconductor superlattices: An anisotropic-effective-medium approach
MF Pereira Jr, I Galbraith, SW Koch, G Duggan
Physical Review B 42 (11), 7084 1990
Citations: 54



Interplay of Coulomb and nonparabolicity effects in the intersubband absorption of electrons and holes in quantum wells
MF Pereira Jr, H Wenzel
Physical Review B—Condensed Matter and Materials Physics 70 (20), 205331 2004
Citations: 53



Theory of nonlinear optical absorption in coupled‐band quantum wells with many‐body effects
MF Pereira Jr, R Binder, SW Koch
Applied physics letters 64 (3), 279-281 1994
Citations: 52



Terahertz and mid infrared radiation: generation, detection and applications
MF Pereira, O Shulika
Springer 2011
Citations: 50



Green’s functions theory for semiconductor-quantum-well laser spectra
MF Pereira Jr, K Henneberger
Physical Review B 53 (24), 16485 1996
Citations: 49



Impact of momentum dependent matrix elements on scattering effects in quantum cascade lasers
T Schmielau, MF Pereira
physica status solidi (b) 246 (2), 329-331 2009
Citations: 48



Microscopic Theory for the Optical Properties of Coulomb‐Correlated Semiconductors
MF Pereira Jr, K Henneberger
physica status solidi (b) 206 (1), 477-491 1998
Citations: 48



Effects of strain and Coulomb interaction on gain and refractive index in quantum-well lasers
MF Pereira Jr, SW Koch, WW Chow
Journal of the Optical Society of America B 10 (5), 765-773 1993
Citations: 47



Terahertz and mid infrared radiation: detection of explosives and CBRN (using terahertz)
MF Pereira, O Shulika
Springer 2014
Citations: 45



Intersubband gain without global inversion through dilute nitride band engineering
MF Pereira, S Tomić
Applied Physics Letters 98 (6) 2011
Citations: 45



Influence of Coulomb correlations on gain and stimulated emission in (Zn, Cd) Se/Zn (S, Se)/(Zn, Mg)(S, Se) quantum-well lasers
P Michler, M Vehse, J Gutowski, M Behringer, D Hommel, MF Pereira Jr, ...
Physical Review B 58 (4), 2055 1998
Citations: 44



Characterization of intersubband devices combining a nonequilibrium many body theory with transmission spectroscopy experiments
MF Pereira, R Nelander, A Wacker, DG Revin, MR Soulby, LR Wilson, ...
Journal of Materials Science: Materials in Electronics 18, 689-694 2007
Citations: 42



Many-body treatment on the modulation response in a strained quantum well semiconductor laser medium
WW Chow, MF Pereira Jr, SW Koch
Applied physics letters 61 (7), 758-760 1992
Citations: 42



Optical nonlinearities in strained-layer InGaAs/GaAs multiple quantum wells
R Jin, G Khitrova, HM Gibbs, M Pereira, SW Koch, N Peughambarian
Applied Physics Letters 61 (15), 1745-1747 1992
Citations: 42