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Proceedings Paper

Study on grating coupling very long wavelength GaAs/AlGaAs QWIP
Author(s): F. Guo; N. Li; S. Yu; J. Lin; Y. Hou; D. Xiong; Y. He; H. Zeng; X. Xu; Z. Zhu; W. Lu; Q. Huang; J. Zhou
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Paper Abstract

Because of the isotropic energy band structure of the Γ electrons in N type GaAs/AlGaAs quantum well infrared photodetector (QWIP), normal incident radiation absorption is impossible so that the optical grating becomes key requirements for such QWIPs. The development of very long wavelength infrared GaAs/AlxGa1-xAs quantum well Infrared photodetectors (QWIPs) is proposed in the paper based on optimization of 2-d period grating design, processing of detector, and a 16μm cutoff wavelength QWIP has been demonstrated at 40K. The blackbody responsibility Rv=3.4847×106V/W is obtained. The peak detectivity reaches D* λ=2.962×1010cm•Hz1/2/W.

Paper Details

Date Published: 9 June 2006
PDF: 6 pages
Proc. SPIE 6149, 2nd International Symposium on Advanced Optical Manufacturing and Testing Technologies: Advanced Optical Manufacturing Technologies, 61493O (9 June 2006); doi: 10.1117/12.674360
Show Author Affiliations
F. Guo, Shanghai Institute of Technical Physics (China)
East China Normal Univ. (China)
N. Li, Shanghai Institute of Technical Physics (China)
S. Yu, East China Normal Univ. (China)
J. Lin, East China Normal Univ. (China)
Y. Hou, Shanghai Institute of Technical Physics (China)
D. Xiong, Shanghai Institute of Technical Physics (China)
Y. He, Shanghai Institute of Technical Physics (China)
H. Zeng, Shanghai Institute of Technical Physics (China)
X. Xu, Shanghai Institute of Technical Physics (China)
Z. Zhu, East China Normal Univ. (China)
W. Lu, Shanghai Institute of Technical Physics (China)
Q. Huang, Institute of Physics (China)
J. Zhou, Institute of Physics (China)


Published in SPIE Proceedings Vol. 6149:
2nd International Symposium on Advanced Optical Manufacturing and Testing Technologies: Advanced Optical Manufacturing Technologies
Li Yang; Shangming Wen; Yaolong Chen; Ernst-Bernhard Kley, Editor(s)

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