Electronic band structure of wurtzite GaN under biaxial strain in the M plane investigated with photoreflectance spectroscopy

S Ghosh, P Waltereit, O Brandt, HT Grahn, KH Ploog - Physical Review B, 2002 - APS
We investigate the modification of the electronic band structure in wurtzite GaN due to
biaxial strain within the M plane using photoreflectance (PR) spectroscopy. The …

Magneto-optical Kerr effect spectroscopy study of : Evidence for an interlayer -like exciton

D Das, D Jana, T Deilmann, S Ghosh - Physical Review B, 2024 - APS
Magneto-optical Kerr effect spectroscopy has been used to measure the Land e ́ g-factor of
excitons in bulk 2 H-MoS 2. For the ground state A 1 s exciton, the adjacent interlayer ILA …

Anomalous behavior of the excited state of the exciton in bulk

V Jindal, S Bhuyan, T Deilmann, S Ghosh - Physical Review B, 2018 - APS
Results of optical spectroscopy studies on bulk 2 H-WS 2 at energies close to its direct band
gap are presented. Reflectance and absorption measurements at low temperature show …

Electroreflectance spectroscopy of few-layer MoS2: Issues related to A1s exciton subspecies, exciton binding energy, and inter-layer exciton

V Jindal, D Jana, S Ghosh - Journal of Applied Physics, 2022 - pubs.aip.org
Optical spectra of few-layer transition metal dichalcogenide semiconductors reveal several
transitions whose character and origins continue to be debated. We have studied hBN …

InGaN/GaN quantum wells for polariton laser diodes: Role of inhomogeneous broadening

M Glauser, C Mounir, G Rossbach, E Feltin… - Journal of Applied …, 2014 - pubs.aip.org
Contrary to the case of III-nitride based visible light-emitting diodes for which the
inhomogeneous linewidth broadening characteristic of InGaN-based multiple quantum well …

Interlayer and excited-state exciton transitions in bulk

V Jindal, D Jana, T Deilmann, S Ghosh - Physical Review B, 2020 - APS
Photoreflectance (PR) spectrum of bulk 2 H-MoS 2 at energies around its direct band gap is
shown to have at least three distinct spectral features over a certain temperature range …

Charge carrier localization effects on the quantum efficiency and operating temperature range of InAsxP1− x/InP quantum well detectors

G Vashisht, VK Dixit, S Porwal, R Kumar… - Journal of Applied …, 2016 - pubs.aip.org
The effect of charge carrier localization resulting in “S-shaped” temperature dependence of
the photoluminescence peak energy of InAs x P 1− x/InP quantum wells (QWs) is distinctly …

[HTML][HTML] Impact of Faddeeva–Voigt broadening on line-shape analysis at critical points of dielectric functions

AS Alomar - AIP Advances, 2022 - pubs.aip.org
Faddeeva–Voigt broadening (FVB) couples the physical characteristics of both Lorentzian
and Gaussian profiles as a combined analytic function shaping the dielectric response …

Effect of surface morphology on macroscale and microscale optical properties of layered InSe grown by molecular beam epitaxy

PS Avdienko, IV Sedova, DD Firsov, OS Komkov… - JOSA B, 2021 - opg.optica.org
This paper reports the results on the microphotoluminescence (µPL) and photoreflectance
(PR) spectroscopy studies of InSe thin film grown by molecular beam epitaxy on GaAs (001) …

Origin of additional spectral features in modulated reflectance spectra of 2-dimensional semiconductor systems

A Mukherjee, S Ghosh - Journal of Applied Physics, 2014 - pubs.aip.org
High resolution photoreflectance (PR) spectroscopy study on a single GaAs/AlGaAs
quantum well representing a two-dimensional (2D) system, shows additional distinct …