Zobrazeno 1 - 10
of 48
pro vyhledávání: '"Ajit V. Barve"'
Autor:
Sean Burns, Kelvin Zhuang, Ajit V. Barve, Matthew Peters, Benjamin Kesler, Guowei Zhao, Cho-Shuen Hsieh, Yuefa Li, Jun Yang, Mike Dolganov, Eric R. Hegblom, Jay A. Skidmore, Suning Xie, Yeyu Zhu
Publikováno v:
2021 27th International Semiconductor Laser Conference (ISLC).
Autor:
Matthew Peters, Benjamin Kesler, Jay A. Skidmore, Jun Yang, Ajit V. Barve, Mark Tashima, Abhinav Robit, Eric R. Hegblom, Suning Xie, Zhixi Bian, Guowei Zhao
Publikováno v:
Vertical-Cavity Surface-Emitting Lasers XXV.
Multiple active regions connected in series with low-resistance tunnel junctions enable a new class of high-brightness VCSEL arrays that enhance the capability for 3DS sensing applications. Multiple photons can be generated by each injected electron
Publikováno v:
physica status solidi c. 10:736-739
We report on the use of polarization sensitive photocurrent spectroscopy for identifying the participating transitions in type-II superlattices based on InAs/GaSb system. Prominent features in measured transverse magnetic and transverse electric phot
Autor:
Ajit V. Barve, Sanjay Krishna
Publikováno v:
physica status solidi c. 10:756-760
We demonstrate photovoltaic operation of midwave (MW) quantum dot infrared photodetector (QDIP) with conventional n-i-n geometry, with a quantum cascade design. Quantum dot quantum cascade detector (QD-QCD) provides zero bias operation with responsiv
Autor:
Stephen Myers, David R. Rhiger, Zhaobing Tian, Nutan Gautam, Brianna Klein, Edward P. Smith, Ajit V. Barve, Sanjay Krishna, Ha Sul Kim
Publikováno v:
IEEE Journal of Quantum Electronics. 49:211-217
We present the design, growth, fabrication, and characterization of unipolar barrier photodiodes, pBiBn, based on type-II InAs/GaSb superlattice for midwave and longwave infrared detection. Design optimization of barriers using bandgap and band-offse
Autor:
Glauco Rogerio Cugler Fiorante, Sanjay Krishna, Subhananda Chakrabarti, Yagya D. Sharma, Sourav Adhikary, M. A. Shirazi, Sebastián E. Godoy, Jun Oh Kim, Brianna Klein, John Montoya, Marziyeh Zamiri, Ajit V. Barve, S. Sengupta, Woo-Yong Jang
Publikováno v:
IEEE Journal of Quantum Electronics. 48:1243-1251
We report on a systematic study of the effect of barriers on quantum dots-in-a-well infrared photodetectors. Four devices are fabricated and characterized with varying composition for barriers adjacent to quantum dots and away from quantum dots. Effe
Autor:
Yagya D. Sharma, Jiayi Shao, T. J. Rotter, Ajit V. Barve, Thomas E. Vandervelde, Sanjay Krishna, John Montoya
Publikováno v:
International Journal of High Speed Electronics and Systems. 20:549-555
Reduction in the dark current and improvement in signal to noise ratio in the quantum dots in a well infrared photodetectors using resonant tunneling barriers have been demonstrated. Ultra-low dark current levels and high detectivity of 3×1010 cm.Hz
Autor:
Jiayi Shao, Yagya D. Sharma, Srujan Meesala, Sanjay Krishna, John Montaya, Woo-Yong Jang, Ajit V. Barve, Sang Jun Lee, Thomas J. Rotter
Publikováno v:
Infrared Physics & Technology. 54:215-219
Systematic study of various types of intersubband transitions in the quantum dots-in-a-well (DWELL) infrared photodetectors has been presented. By changing the thickness of the quantum well, the excited state energy can be tuned with respect to the b
Autor:
Sam Kyu Noh, Sanjay Krishna, K. Sankalp, Jiayi Shao, Sang Jun Lee, Thomas E. Vandervelde, Y.D. Sharma, Ajit V. Barve
Publikováno v:
IEEE Journal of Quantum Electronics. 46:1105-1114
The use of resonant tunneling (RT) barriers in the design of quantum dots-in-a-well (DWELL) infrared photodetectors is reported. The design of RT barriers for a variety of goals has been discussed. For simple DWELL designs, we demonstrate 2-3 orders-
Publikováno v:
Laser & Photonics Reviews. 4:738-750
Quantum dot infrared photodetectors (QDIPs) have made significant progress after their early demonstration about a decade ago. We review the progress made by QDIP technology over the last few years and compare QDIPs with quantum well infrared photode