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Paper Abstract and Keywords
Presentation 2014-11-28 09:30
Realization of Lasing Action of GaN/AlGaN based Terahertz Quantum Cascade Laser using Two Quantum Well Structure
Wataru Terashima, Hideki Hirayama (RIKEN) ED2014-85 CPM2014-142 LQE2014-113 Link to ES Tech. Rep. Archives: ED2014-85 CPM2014-142 LQE2014-113
Abstract (in Japanese) (See Japanese page) 
(in English) III-Nitride semiconductors having huge longitudinal optical phonon energies are promising as materials to solve a problem of "development of operational frequency range (5-12 THz)" on terahertz quantum cascade lasers (THz-QCLs). In this study, for the purpose of realization of THz emission/lasing due to optical transition between target subband levels, we designed and fabricated a simple quantum cascade (QC) structure with a diagonal optical transition scheme whose active region consisted of 2QWs per one-period that minimized the number of laser levels. We successfully for the first time observed lasing action emitting at the same frequency (5.5 THz) as the target one from a GaN-based THz-QCL device. We also successfully opened up new frequency region on THz-QCLs.
Keyword (in Japanese) (See Japanese page) 
(in English) Quantum cascade laser / Terahertz / III-Nitride semiconductors / Lasing / / / /  
Reference Info. IEICE Tech. Rep., vol. 114, no. 338, LQE2014-113, pp. 59-62, Nov. 2014.
Paper # LQE2014-113 
Date of Issue 2014-11-20 (ED, CPM, LQE) 
ISSN Print edition: ISSN 0913-5685  Online edition: ISSN 2432-6380
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 ED2014-85 CPM2014-142 LQE2014-113 Link to ES Tech. Rep. Archives: ED2014-85 CPM2014-142 LQE2014-113

Conference Information
Committee LQE ED CPM  
Conference Date 2014-11-27 - 2014-11-28 
Place (in Japanese) (See Japanese page) 
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Paper Information
Registration To LQE 
Conference Code 2014-11-LQE-ED-CPM 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Realization of Lasing Action of GaN/AlGaN based Terahertz Quantum Cascade Laser using Two Quantum Well Structure 
Sub Title (in English)  
Keyword(1) Quantum cascade laser  
Keyword(2) Terahertz  
Keyword(3) III-Nitride semiconductors  
Keyword(4) Lasing  
1st Author's Name Wataru Terashima  
1st Author's Affiliation RIKEN (RIKEN)
2nd Author's Name Hideki Hirayama  
2nd Author's Affiliation RIKEN (RIKEN)
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Date Time 2014-11-28 09:30:00 
Presentation Time 25 
Registration for LQE 
Paper # IEICE-ED2014-85,IEICE-CPM2014-142,IEICE-LQE2014-113 
Volume (vol) IEICE-114 
Number (no) no.336(ED), no.337(CPM), no.338(LQE) 
Page pp.59-62 
#Pages IEICE-4 
Date of Issue IEICE-ED-2014-11-20,IEICE-CPM-2014-11-20,IEICE-LQE-2014-11-20 

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