J
Jayeeta Bhattacharyya
Researcher at Indian Institute of Technology Madras
Publications - 38
Citations - 319
Jayeeta Bhattacharyya is an academic researcher from Indian Institute of Technology Madras. The author has contributed to research in topics: Exciton & Photoluminescence. The author has an hindex of 9, co-authored 34 publications receiving 283 citations. Previous affiliations of Jayeeta Bhattacharyya include Helmholtz-Zentrum Dresden-Rossendorf & Tata Institute of Fundamental Research.
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Journal ArticleDOI
Intersublevel Spectroscopy on Single InAs-Quantum Dots by Terahertz Near-Field Microscopy
Rainer Jacob,Stephan Winnerl,Markus Fehrenbacher,Jayeeta Bhattacharyya,Harald Schneider,Marc Tobias Wenzel,Hans-Georg von Ribbeck,Lukas M. Eng,Paola Atkinson,Oliver G. Schmidt,Manfred Helm +10 more
TL;DR: Using scattering-type near-field infrared microscopy in combination with a free-electron laser, intersublevel transitions in buried single InAs quantum dots are investigated and signals from bound-to-bound transitions of single electrons in a probe volume of the order of (100 nm)(3).
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Polarized photoluminescence and absorption in A-plane InN films
TL;DR: In this paper, the authors reported the observation of strong polarization anisotropy in photoluminescence (PL) and the absorption spectra of [112¯0] oriented A-plane wurtzite InN films grown on R-plane (11¯02) sapphire substrates using molecular beam epitaxy.
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Optical polarization properties of interband transitions in strained group-III-nitride alloy films on GaN substrates with nonpolar orientation
TL;DR: In this paper, a perturbation theory study of the combined effects of composition and anisotropic in-plane strain on the optical polarization properties of the three interband transitions in the vicinity of the fundamental energy gap of wurtzite group-III-nitride alloy films, pseudomorphically grown on GaN substrates with nonpolar orientation such as M-plane GaN(11¯00), is presented.
Journal ArticleDOI
Observation of forbidden exciton transitions mediated by Coulomb interactions in photoexcited semiconductor quantum wells.
William Rice,Junichiro Kono,S. Zybell,S. Zybell,S. Winnerl,Jayeeta Bhattacharyya,Harald Schneider,Manfred Helm,Manfred Helm,Benjamin Ewers,Alexey Chernikov,Martin Koch,Sangam Chatterjee,Galina Khitrova,H. M. Gibbs,L. Schneebeli,B. Breddermann,Mackillo Kira,Stephan W. Koch +18 more
TL;DR: Terahertz pulses are used to induce resonant transitions between the eigenstates of optically generated exciton populations in a high-quality semiconductor quantum well sample, yielding an effective terahertz transition between the 1s and 2s populations.
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Simultaneous time and wavelength resolved spectroscopy under two-colour near infrared and terahertz excitation
Jayeeta Bhattacharyya,Martin Wagner,S. Zybell,S. Winnerl,D. Stehr,Manfred Helm,Harald Schneider +6 more
TL;DR: This work uses table-top Ti:sapphire lasers and a free-electron laser emitting ps pulses as excitation sources and a streak camera coupled to a spectrometer for detection for time and wavelength resolved spectroscopy.