Zobrazeno 1 - 10
of 23
pro vyhledávání: '"R. V. Shenoi"'
Publikováno v:
IEEE Journal of Quantum Electronics. 46:1051-1057
We present the design, fabrication, and characterization, of multi-spectral quantum dots-in-a-well (DWELL) infrared detectors, by the integration of a surface plasmon assisted resonant cavity with the infrared detector. A square lattice and rectangul
Autor:
J. Bur, Yong-Sung Kim, Chun Chieh Chang, Danhong Huang, R. V. Shenoi, Sanjay Krishna, Shawn-Yu Lin, Y.D. Sharma
Publikováno v:
Nano Letters. 10:1704-1709
In this paper, we report a successful realization and integration of a gold two-dimensional hole array (2DHA) structure with semiconductor InAs quantum dot (QD). We show experimentally that a properly designed 2DHA-QD photodetector can facilitate a s
Autor:
Thomas E. Vandervelde, Sam Kyu Noh, R. S. Attaluri, Majeed M. Hayat, Sanjay Krishna, Steven C. Bender, J.S. Tyo, Woo-Yong Jang, Y.D. Sharma, Sang Jun Lee, E.R. Cantwell, R. V. Shenoi, Andreas Stintz
Publikováno v:
IEEE Journal of Quantum Electronics. 45:674-683
The quantum-confined Stark effect in intersublevel transitions present in quantum-dots-in-a-well (DWELL) detectors gives rise to a midIR spectral response that is dependent upon the detector's operational bias. The spectral responses resulting from d
Autor:
Ajit V. Barve, Jiayi Shao, Sanjay Krishna, R. V. Shenoi, Y.D. Sharma, Michael C. Lenz, Eric S. Varley, Thomas E. Vandervelde, David A. Ramirez
Publikováno v:
IEEE Journal of Selected Topics in Quantum Electronics. 14:1150-1161
In this paper, the basics and some of the recent developments in quantum dots-in-a-well (DWELL) focal plane arrays (FPAs) are reviewed. Fundamentally, these detectors represent a hybrid between a conventional quantum well infrared photodetector (QWIP
Publikováno v:
Nanotechnology. 26(23)
We report some striking results on thermal radiation properties of a resonantly coupled cavity photonic crystal (PhC) at elevated temperatures (T = 400-900 K). We experimentally found that at resonant wavelengths, λ = 1.1, 1.64, 2.85 μm, the PhC em
Publikováno v:
Active Photonic Materials VI.
We report the observation of unusual thermal radiation at elevated temperatures (T=400-900K) from a three-dimensional metallic photonic-crystal composite that includes a micro-cavity. Upon thermal excitation by a heating element of a large heat-mass
Publikováno v:
SPIE Proceedings.
The use of metallic nanostructures for enhanced transmission and near field phenomena have been a topic of extensive research. Here we present integration of active media, consisting of InAs quantum dots (QD) embedded in quantum wells, with 2 dimensi
Publikováno v:
Ultrafast Phenomena in Semiconductors and Nanostructure Materials XV.
The incorporation of semiconductor quantum dots into different heterostructures for applications in nanoscale photodetection, lasing and amplification has been an active area of research in recent years. Here, we use ultrafast differential transmissi
Publikováno v:
2010 IEEE Photinic Society's 23rd Annual Meeting.
Recently, highly efficient absorbers have been demonstrated that utilize the enhanced transmission and high-intensity near field characteristics of surface plasmons1. By engineering the geometry of these nanostructures, the field characteristics can
Autor:
Sang Jun Lee, Steven R. J. Brueck, John Montoya, Sam Kyu Noh, Ajit V. Barve, Sanjay Krishna, Ha Sul Kim, R. V. Shenoi, Mikhail Naydenkov, Zahyun Ku
Publikováno v:
SPIE Proceedings.
Next generation infrared photodetector technology will require focal plane array (FPA) systems that have multi-spectral imaging capabilities. One proposed approach to realizing these multicolor devices is to use plasmonic resonators. However, device