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Paper Abstract and Keywords
Presentation 2014-12-23 10:30
[Invited Talk] Realization of GaN-based Terahertz Quantum Cascade Lasers using Pure Three-Level Laser Structure
Wataru Terashima, Hideki Hirayama (RIKEN) ED2014-110
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 lasing due to optical transition between target subband levels, we designed and fabricated THz-QCLs with unique quantum cascade (QC) structures whose number of wave-functions contributed to lasing is limited to minimum 3 subband levels. We successfully for the first time observed lasing action emitting at the same frequencies (5.5 and 7.0 THz) as the target ones from GaN-based THz-QCL devices. We also successfully opened up new frequency region on THz-QCLs.
Keyword (in Japanese) (See Japanese page) 
(in English) III-nitride semiconductors / Quantum cascade laser / Lasing / Terahertz / / / /  
Reference Info. IEICE Tech. Rep., vol. 114, no. 387, ED2014-110, pp. 69-74, Dec. 2014.
Paper # ED2014-110 
Date of Issue 2014-12-15 (ED) 
ISSN Print edition: ISSN 0913-5685    Online edition: ISSN 2432-6380
Copyright
and
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 ED2014-110

Conference Information
Committee ED  
Conference Date 2014-12-22 - 2014-12-23 
Place (in Japanese) (See Japanese page) 
Place (in English)  
Topics (in Japanese) (See Japanese page) 
Topics (in English)  
Paper Information
Registration To ED 
Conference Code 2014-12-ED 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Realization of GaN-based Terahertz Quantum Cascade Lasers using Pure Three-Level Laser Structure 
Sub Title (in English)  
Keyword(1) III-nitride semiconductors  
Keyword(2) Quantum cascade laser  
Keyword(3) Lasing  
Keyword(4) Terahertz  
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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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Speaker Author-1 
Date Time 2014-12-23 10:30:00 
Presentation Time 40 minutes 
Registration for ED 
Paper # ED2014-110 
Volume (vol) vol.114 
Number (no) no.387 
Page pp.69-74 
#Pages 6 
Date of Issue 2014-12-15 (ED) 

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