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| Presentation | 2019-11-22 13:25 Dislocation density dependence of optical gain and internal loss in UV-B region AlGaN active layer Shunya Tanaka, Yuta Kawase (Meijo Univ.), Kosuke Sato (Asahi-Kasei/Meijo Univ.), Shinji Yasue, Shohei Teramura, Yuya Ogino (Meijo Univ.), Sho Iwayama (Meijo Univ./Mie Univ.), Motoaki Iwaya, Tetsuya Takeuchi, Satoshi Kamiyama (Meijo Univ.), Isamu Akasaki (Meijo Univ./Akasaki Research Center, Nagoya Univ.), Hideto Miyake (Mie Univ.)  ED2019-55 CPM2019-74 LQE2019-98 Link to ES Tech. Rep. Archives: ED2019-55 CPM2019-74 LQE2019-98 |
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| Abstract | (in Japanese) | (See Japanese page) |
| (in English) | The dependence of threshold pumping power density, optical gain, and internal loss on the dislocation density of AlGaN-based UV-B optically pumped laser was investigated. It was confirmed that the laser oscillation threshold was reduced by reducing the dislocation density. In addition, variable stripe length (VSL) measurement confirmed that low dislocation not only increased the optical gain due to non-radiative recombination reduction but also reduced internal loss. Therefore, it was confirmed that low dislocation resulted in not only a large optical gain by low carrier injection but also a reduction in internal loss, resulting in a large laser oscillation threshold. The reduction of internal loss can be explained by a scattering model based on the increase in refractive index fluctuation formed by dislocation itself. | |
| Keyword | (in Japanese) | (See Japanese page) |
| (in English) | MOVPE / AlGaN / UV laser / VSL measurement / / / / | |
| Reference Info. | IEICE Tech. Rep., vol. 119, no. 304, LQE2019-98, pp. 93-96, Nov. 2019. | |
| Paper # | LQE2019-98 | |
| Date of Issue | 2019-11-14 (ED, CPM, LQE) | |
| 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 | ED2019-55 CPM2019-74 LQE2019-98 Link to ES Tech. Rep. Archives: ED2019-55 CPM2019-74 LQE2019-98 |
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| Conference Information | |
| Committee | CPM LQE ED |
| Conference Date | 2019-11-21 - 2019-11-22 |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | Shizuoka Univ. (Hamamatsu) |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | Nitride Semiconductor Devices, Materials, Related Technologies |
| Paper Information | |
| Registration To | LQE |
| Conference Code | 2019-11-CPM-LQE-ED |
| Language | Japanese |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Dislocation density dependence of optical gain and internal loss in UV-B region AlGaN active layer |
| Sub Title (in English) | |
| Keyword(1) | MOVPE |
| Keyword(2) | AlGaN |
| Keyword(3) | UV laser |
| Keyword(4) | VSL measurement |
| Keyword(5) | |
| Keyword(6) | |
| Keyword(7) | |
| Keyword(8) | |
| 1st Author's Name | Shunya Tanaka |
| 1st Author's Affiliation | Meijo University (Meijo Univ.) |
| 2nd Author's Name | Yuta Kawase |
| 2nd Author's Affiliation | Meijo University (Meijo Univ.) |
| 3rd Author's Name | Kosuke Sato |
| 3rd Author's Affiliation | Asahi Kasei Corporation/Meijo University (Asahi-Kasei/Meijo Univ.) |
| 4th Author's Name | Shinji Yasue |
| 4th Author's Affiliation | Meijo University (Meijo Univ.) |
| 5th Author's Name | Shohei Teramura |
| 5th Author's Affiliation | Meijo University (Meijo Univ.) |
| 6th Author's Name | Yuya Ogino |
| 6th Author's Affiliation | Meijo University (Meijo Univ.) |
| 7th Author's Name | Sho Iwayama |
| 7th Author's Affiliation | Meijo University/Mie University (Meijo Univ./Mie Univ.) |
| 8th Author's Name | Motoaki Iwaya |
| 8th Author's Affiliation | Meijo University (Meijo Univ.) |
| 9th Author's Name | Tetsuya Takeuchi |
| 9th Author's Affiliation | Meijo University (Meijo Univ.) |
| 10th Author's Name | Satoshi Kamiyama |
| 10th Author's Affiliation | Meijo University (Meijo Univ.) |
| 11th Author's Name | Isamu Akasaki |
| 11th Author's Affiliation | Meijo University/Akasaki Research Center, Nagoya University (Meijo Univ./Akasaki Research Center, Nagoya Univ.) |
| 12th Author's Name | Hideto Miyake |
| 12th Author's Affiliation | Mie University (Mie Univ.) |
| 13th Author's Name | |
| 13th Author's Affiliation | () |
| 14th Author's Name | |
| 14th Author's Affiliation | () |
| 15th Author's Name | |
| 15th Author's Affiliation | () |
| 16th Author's Name | |
| 16th Author's Affiliation | () |
| 17th Author's Name | |
| 17th Author's Affiliation | () |
| 18th Author's Name | |
| 18th Author's Affiliation | () |
| Speaker | Author-1 |
| Date Time | 2019-11-22 13:25:00 |
| Presentation Time | 20 minutes |
| Registration for | LQE |
| Paper # | ED2019-55, CPM2019-74, LQE2019-98 |
| Volume (vol) | vol.119 |
| Number (no) | no.302(ED), no.303(CPM), no.304(LQE) |
| Page | pp.93-96 |
| #Pages | 4 |
| Date of Issue | 2019-11-14 (ED, CPM, LQE) |
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