The intersubband absorption linewidth has much importance in the operation of quantum well infrared photodetectors (QWIPs) and quantum cascade lasers (QCLs). Here we calculate the intersubband absorption linewidth due to interface roughness scattering, deformation potential acoustic phonon scattering, and optical (intervalley) phonon scattering via the deformation potential, i.e. g phonon. We consider the n-type Si/Si1-xGe x structure. The linewidths are studied for various well widths and different in-plane kinetic energy. © 2004 WILEY-VCH Verlag GmbH &amp; Co. KGaA, Weinheim.

BRATATI MUKHOPADHYAY

Radio Physics and Electronics

P K BASU

University of Calcutta (informally known as Calcutta University or CU) is a collegiate public state university located in Kolkata, West Bengal, India.&nbsp;Within India it is recognized as a &quot;Five-Star University&quot; and accredited &quot;A&quot; Grade by National Assessment and Accreditation Council.

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The University of Calcutta has secured the Fifth position among the Universities of India in the prestigious &quot;Indian University Ranking 2019&quot; list, released by the NIRF of the Ministry of Human Resource Development, Government of India.

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It was established on 24 January 1857, and was one of the first institutions in Asia to be established as a multidisciplinary and Western-style university. Its alumni and faculty include several heads of state, heads of government, social reformers, prominent artists, only academy award winner and Dirac medal winner in India, many Fellows of the Royal Society and five Nobel laureates as of 2019 which is highest in South Asia.

University Of Calcutta

Physica Status Solidi (B) Basic Research

We have theoretically demonstrated population inversion between two conduction subbands in a silicon quantum well in a triple-well structure with Si and SiGe, considering tunneling, radiative- and non-radiative-acoustic, and g-phonon transitions. The gain spectra are then calculated and threshold current densities are estimated.

Microwave and Optical Technology Letters

Calculated gain and threshold current density for interconduction-subband transition in Si triple-quantum-well-structures

Multi-color Long Wavelength Infrared Detectors Based On III-V Semiconductors

physica status solidi (b)

Theory of the lineshape of quantum well intersubband transitions: optical dephasing and light propagation effects

Journal of Applied Physics

Intersubband absorption linewidth in GaAs quantum wells due to scattering by interface roughness, phonons, alloy disorder, and impurities

Theory of Optical Processes in Semiconductors

Classical theory of optical processes

Linewidth for interconduction subband transition in Si/Si 1-xGex quantum wells

Journal	Physica Status Solidi (B) Basic Research
Publisher	-
ISSN	0370-1972
Open Access	No