DocumentCode
978972
Title
Long period grating for 3-5 μm quantum-well infra-red photodetectors
Author
Pan, David Z. ; Kong, Michael
Author_Institution
Inst. of Semicond., Acad. Sinica
Volume
32
Issue
11
fYear
1996
fDate
5/23/1996 12:00:00 AM
Firstpage
1032
Lastpage
1033
Abstract
By considering all possible high order diffracted waves, the authors calculate the coupling efficiency of long period gratings for 3-5 μm quantum-well infra-red photodetectors (QWIPs) on the basis of the modal expansion model (MEM). A large coupling efficiency for 3-5 μm QWIPs has been demonstrated. This greatly reduces the difficulties in fabricating 3-5 μm grating coupled QWIPs and opens the way to fabricate high performance 3-5 μm and two colour QWIPs image arrays
Keywords
diffraction gratings; infrared detectors; photodetectors; semiconductor quantum wells; μm quantum-well infra-red photodetectors; 3 to 5 mum; IR detectors; coupling efficiency; grating coupled QWIPs; high order diffracted waves; high performance 3-5 μm image arrays; large coupling efficiency; long period grating; long period gratings; modal expansion model;
fLanguage
English
Journal_Title
Electronics Letters
Publisher
iet
ISSN
0013-5194
Type
jour
DOI
10.1049/el:19960634
Filename
503101
Link To Document