Characterization of intersubband devices combining a nonequilibrium many body theory with transmission spectroscopy experiments

Pereira, Mauro; Nelander, Rikard; Wacker, Andreas; Revin, D. G.; Soulby, M. R.; Wilson, L. R.; Cockburn, J. W.; Krysa, A. B.; Roberts, J.S.; Airey, R.

doi:10.1007/s10854-006-9093-4

Cited by 33 publications

(16 citation statements)

References 14 publications

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“…Efficient numerical methods used here have been successfully applied to both inter-subband (Pereira and Faragai 2014;Pereira 2007Pereira , 2008Pereira , 2011Pereira et al 2007;Pereira and Tomić 2011) and inter-band transitions (Grempel et al 1996;Pereira et al 1994;Pereira and Henneberger 1997;Chow et al 1992) in quantum wells and superlattices. For completeness, we repeat here the main equations of Pereira (2016) for a guide to the reader, by starting with the interband polarization that has been used to describe superlattices as an effective anisotropic 3D material (Pereira 1995),…”

Section: Mathematical Approach and Model Equationsmentioning

confidence: 99%

Anisotropy and nonlinearity in superlattices II

Pereira

2016

Opt Quant Electron

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Section: Mathematical Approach and Model Equationsmentioning

confidence: 99%

Anisotropy and nonlinearity in superlattices II

Pereira

2016

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“…There is much hope that intersubband devices like quantum cascade lasers (QCLs) will be the main compact THz source but they currently require cryogenic cooling. We will stimulate the development of more efficient simulation tools (Schmielau and Pereira 2009a,b;David 2012) and Round Robin actions for a systematic comparison of theory and experiments (Pereira et al 2007). Thus out of the box solutions for THz QCLs such as lasing without inversion (Pereira 2008;Pereira and Tomić 2011) as well as alternative generation methods will be investigated.…”

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confidence: 99%

TERA-MIR radiation: materials, generation, detection and applications

Pereira

2014

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This special edition is dedicated to original papers covering topics with the areas of interest of COST ACTION MP1204 whose main objective is to advance novel materials, concepts and device designs for generating and detecting THz (0.3-10 THz) and Mid Infrared (10-100 THz) radiation using semiconductor, superconductor, metamaterials and lasers and to beneficially exploit their common aspects within a synergetic approach. The results achieved benefit from the unique networking and capacity-building capabilities provided by the COST framework to unify these two spectral domains from their common aspects of sources, detectors, materials and applications. We are building a platform to investigate interdisciplinary topics in Physics, Electrical Engineering and Technology, Applied Chemistry, Materials Sciences and Biology and Radio Astronomy. In this sense THz and MIR are considered jointly, the driving force for both regimes being applications. The main emphasis of the research presented here is on new fundamental material properties, concepts and device designs that are likely to open the way to new products or to the exploitation of new technologies in the fields of sensing, healthcare, biology, and industrial applications. End users are: research centres, academic, well-established and start-up companies and hospitals. The strong coupling of THz radiation and material excitations has potential to improve the quantum efficiency of THz devices.In the last few years, MIR lasers, light-emitting diodes, detectors and frequency converters have featured significantly improved wavelength tunability, high spectral purity, higher powers and room temperature operation, which are necessary for commercial applications (Tittel et al. 2011;Razeghi 2013). However, whereas miniaturised and cost-efficient optical technology for wavelengths up to about 2.5 µm has become readily available at a very high standard, sources for longer wavelength applications have not yet reached the desired

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“…Efficient numerical methods used here have been successfully applied to both intersubband [8][9][10][11][12][13][14] and interband transitions [15][16][17] in quantum wells and superlattices. This paper starts from a similar approach that can also describe superlattices as effective 3D anisotropic media [18,19] and leads to very accurate approximations.…”

Section: Mathematical Approach and Model Equationsmentioning

confidence: 99%