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Paper Abstract and Keywords
Presentation 2007-12-07 10:55
Measurement of the Linewidth Enhancement Factor of Fabry-Perot Quantum Cascade Laser
Naoki Kumazaki, Yohei Takagi, Mikito Ishihara, Kenichi Kasahara (Ritsumeikan Univ.), Naota Akikusa, Tadataka Edamura (Central Res. Labs., Hamamatsu Photonics KK) LQE2007-115
Abstract (in Japanese) (See Japanese page) 
(in English) We investigate the linewidth enhancement factor, $\alpha$ of a Fabry-Perot quantum cascade laser by self-mixing interferometry. For the first time, the theoretically predicted characteristic waveform resulting from a small $\alpha$ could be obtained when the optical feedback parameter was greater than one. The shape of this waveform was totally different from that of a conventional distributed-feedback laser diode with a large $\alpha$. We demonstrate that subband nonparabolicity could be one of the reasons why quantum cascade lasers have a small, but non-zero, $\alpha$ value.
Keyword (in Japanese) (See Japanese page) 
(in English) Quantum cascade lser / Linewidth enhancement factor / Self-Mixing interferometry / subband, nonparabolicity / / / /  
Reference Info. IEICE Tech. Rep., vol. 107, no. 372, LQE2007-115, pp. 11-14, Dec. 2007.
Paper # LQE2007-115 
Date of Issue 2007-11-30 (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 LQE2007-115

Conference Information
Committee LQE  
Conference Date 2007-12-07 - 2007-12-07 
Place (in Japanese) (See Japanese page) 
Place (in English) Kikai-Shinko-Kaikan Bldg. 
Topics (in Japanese) (See Japanese page) 
Topics (in English)  
Paper Information
Registration To LQE 
Conference Code 2007-12-LQE 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Measurement of the Linewidth Enhancement Factor of Fabry-Perot Quantum Cascade Laser 
Sub Title (in English)  
Keyword(1) Quantum cascade lser  
Keyword(2) Linewidth enhancement factor  
Keyword(3) Self-Mixing interferometry  
Keyword(4) subband, nonparabolicity  
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Keyword(6)  
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1st Author's Name Naoki Kumazaki  
1st Author's Affiliation Ritsumeikan University (Ritsumeikan Univ.)
2nd Author's Name Yohei Takagi  
2nd Author's Affiliation Ritsumeikan University (Ritsumeikan Univ.)
3rd Author's Name Mikito Ishihara  
3rd Author's Affiliation Ritsumeikan University (Ritsumeikan Univ.)
4th Author's Name Kenichi Kasahara  
4th Author's Affiliation Ritsumeikan University (Ritsumeikan Univ.)
5th Author's Name Naota Akikusa  
5th Author's Affiliation Central Research Labs., Hamamatsu Photonics KK (Central Res. Labs., Hamamatsu Photonics KK)
6th Author's Name Tadataka Edamura  
6th Author's Affiliation Central Research Labs., Hamamatsu Photonics KK (Central Res. Labs., Hamamatsu Photonics KK)
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Speaker Author-1 
Date Time 2007-12-07 10:55:00 
Presentation Time 25 minutes 
Registration for LQE 
Paper # LQE2007-115 
Volume (vol) vol.107 
Number (no) no.372 
Page pp.11-14 
#Pages 4 
Date of Issue 2007-11-30 (LQE) 

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