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Paper Abstract and Keywords
Presentation 2017-08-31 16:15
Room temperature quantum cascade detector based on coupled quantum well design
Tatsuo Dougakiuchi, Kazuue Fujita, Toru Hirohata, Akio Ito, Masahiro Hitaka, Tadataka Edamura (Hamamatsu Photonics) R2017-30 EMD2017-24 CPM2017-45 OPE2017-54 LQE2017-27
Abstract (in Japanese) (See Japanese page) 
(in English) High photoresponse in a room temperature quantum cascade detector (QCD) based on a coupled quantum well design is reported with a peak detection wavelength of 5.4 μm. In this design, forward electron transfer is engineered to be five times as large as relaxation back to the ground level. In this situation, the coupled quantum well QCD indicates a responsivity of 7 mA/W as well as a specified detectivity (D*) of 2.5×10^7 cmW^-1Hz^1/2, both at room temperature with commonly used 45˚ wedge configuration. Applying a waveguide configuration for the proposed QCD, an elevated responsivity of ~40 mA/W with a D* of 3.5×10^7 cmW^-1Hz^1/2 was obtained at room temperature. A laser absorption spectroscopy for N2O gas with proposed QCD and a distributed feedback quantum cascade laser has been also demonstrated.
Keyword (in Japanese) (See Japanese page) 
(in English) Quantum cascade detector / Mid-infrared / Coupled quantum well / Room temperature operation / Waveguide configuration / Laser absorption spectroscopy / /  
Reference Info. IEICE Tech. Rep., vol. 117, no. 195, LQE2017-27, pp. 31-36, Aug. 2017.
Paper # LQE2017-27 
Date of Issue 2017-08-24 (R, EMD, CPM, OPE, LQE) 
ISSN Print edition: ISSN 0913-5685    Online edition: ISSN 2432-6380
Copyright
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reproduction		 All rights are reserved and no part of this publication may be reproduced or transmitted in any form or by any means, electronic or mechanical, including photocopy, recording, or any information storage and retrieval system, without permission in writing from the publisher. Notwithstanding, instructors are permitted to photocopy isolated articles for noncommercial classroom use without fee. (License No.: 10GA0019/12GB0052/13GB0056/17GB0034/18GB0034)
Download PDF R2017-30 EMD2017-24 CPM2017-45 OPE2017-54 LQE2017-27

Conference Information
Committee R EMD CPM LQE OPE  
Conference Date 2017-08-31 - 2017-09-01 
Place (in Japanese) (See Japanese page) 
Place (in English)  
Topics (in Japanese) (See Japanese page) 
Topics (in English)  
Paper Information
Registration To LQE 
Conference Code 2017-08-R-EMD-CPM-LQE-OPE 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Room temperature quantum cascade detector based on coupled quantum well design 
Sub Title (in English)  
Keyword(1) Quantum cascade detector  
Keyword(2) Mid-infrared  
Keyword(3) Coupled quantum well  
Keyword(4) Room temperature operation  
Keyword(5) Waveguide configuration  
Keyword(6) Laser absorption spectroscopy  
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Keyword(8)  
1st Author's Name Tatsuo Dougakiuchi  
1st Author's Affiliation Hamamatsu Photonics K. K. (Hamamatsu Photonics)
2nd Author's Name Kazuue Fujita  
2nd Author's Affiliation Hamamatsu Photonics K. K. (Hamamatsu Photonics)
3rd Author's Name Toru Hirohata  
3rd Author's Affiliation Hamamatsu Photonics K. K. (Hamamatsu Photonics)
4th Author's Name Akio Ito  
4th Author's Affiliation Hamamatsu Photonics K. K. (Hamamatsu Photonics)
5th Author's Name Masahiro Hitaka  
5th Author's Affiliation Hamamatsu Photonics K. K. (Hamamatsu Photonics)
6th Author's Name Tadataka Edamura  
6th Author's Affiliation Hamamatsu Photonics K. K. (Hamamatsu Photonics)
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Speaker Author-1 
Date Time 2017-08-31 16:15:00 
Presentation Time 25 minutes 
Registration for LQE 
Paper # R2017-30, EMD2017-24, CPM2017-45, OPE2017-54, LQE2017-27 
Volume (vol) vol.117 
Number (no) no.191(R), no.192(EMD), no.193(CPM), no.194(OPE), no.195(LQE) 
Page pp.31-36 
#Pages 6 
Date of Issue 2017-08-24 (R, EMD, CPM, OPE, LQE) 

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