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Paper Abstract and Keywords
Presentation 2008-04-18 14:30
Low-Power Consumption and Low-Aspect Ratio Laser Diodes
Makoto Ueda, Hiroyuki Sumitomo, Shu Goto, Toru Yamamoto, Hiroyuki Oguri, Satoshi Kajiyama, Kensei Nakao, Hidenori Amano, Hirotada Satoyoshi, Toshihiro Kita, Shigekazu Izumi (Eudyna Devices) R2008-4 CPM2008-4 OPE2008-4
Abstract (in Japanese) (See Japanese page) 
(in English) We have developed low-power consumption and low-aspect ratio laser diodes (LDs) by using ridge waveguide structure. The actual operation current as low as 67 mA at 25 ℃ and 79 mA at 70 ℃ are obtained in output power of 50 mW (CW). The characteristics temperatures (To) for the low temperature range of 25-50 ℃ and the high temperature range of 50-70 ℃ are estimated 179 K and 145 K, respectively. The power consumption in the novel LDs is almost the same as that in conventional S3 (Self-aligned Stepped Substrate) LDs. The full-width at half-maximum of the beam divergence angles perpendicular and parallel to the junction plane at 50 mW (CW) are 16.4 deg and 12.8 deg, respectively. The mean time to failure (MTTF) is estimated as high as 10,000 hours by lifetime test of 1,200 hours under CW operation of 50 mW. These excellent results confer the promising way to apply to the application of optical disc with low cost and high throughput production.
Keyword (in Japanese) (See Japanese page) 
(in English) Laser Diode / Low Power consumption / Low Aspect ratio / AlGaInP / / / /  
Reference Info. IEICE Tech. Rep., vol. 108, no. 7, R2008-4, pp. 17-22, April 2008.
Paper # R2008-4 
Date of Issue 2008-04-11 (R, CPM, OPE) 
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 R2008-4 CPM2008-4 OPE2008-4

Conference Information
Committee OPE CPM R  
Conference Date 2008-04-18 - 2008-04-18 
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 R 
Conference Code 2008-04-OPE-CPM-R 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Low-Power Consumption and Low-Aspect Ratio Laser Diodes 
Sub Title (in English)  
Keyword(1) Laser Diode  
Keyword(2) Low Power consumption  
Keyword(3) Low Aspect ratio  
Keyword(4) AlGaInP  
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1st Author's Name Makoto Ueda  
1st Author's Affiliation Eudyna Devices Inc. (Eudyna Devices)
2nd Author's Name Hiroyuki Sumitomo  
2nd Author's Affiliation Eudyna Devices Inc. (Eudyna Devices)
3rd Author's Name Shu Goto  
3rd Author's Affiliation Eudyna Devices Inc. (Eudyna Devices)
4th Author's Name Toru Yamamoto  
4th Author's Affiliation Eudyna Devices Inc. (Eudyna Devices)
5th Author's Name Hiroyuki Oguri  
5th Author's Affiliation Eudyna Devices Inc. (Eudyna Devices)
6th Author's Name Satoshi Kajiyama  
6th Author's Affiliation Eudyna Devices Inc. (Eudyna Devices)
7th Author's Name Kensei Nakao  
7th Author's Affiliation Eudyna Devices Inc. (Eudyna Devices)
8th Author's Name Hidenori Amano  
8th Author's Affiliation Eudyna Devices Inc. (Eudyna Devices)
9th Author's Name Hirotada Satoyoshi  
9th Author's Affiliation Eudyna Devices Inc. (Eudyna Devices)
10th Author's Name Toshihiro Kita  
10th Author's Affiliation Eudyna Devices Inc. (Eudyna Devices)
11th Author's Name Shigekazu Izumi  
11th Author's Affiliation Eudyna Devices Inc. (Eudyna Devices)
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Speaker Author-1 
Date Time 2008-04-18 14:30:00 
Presentation Time 25 minutes 
Registration for R 
Paper # R2008-4, CPM2008-4, OPE2008-4 
Volume (vol) vol.108 
Number (no) no.7(R), no.8(CPM), no.9(OPE) 
Page pp.17-22 
#Pages 6 
Date of Issue 2008-04-11 (R, CPM, OPE) 

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