| Presentation | 2019-11-22 Dislocation density dependence of optical gain and internal loss in UV-B region AlGaN active layer Shunya Tanaka, Yuta Kawase, Kosuke Sato, Shinji Yasue, Shohei Teramura, Yuya Ogino, Sho Iwayama, Motoaki Iwaya, Tetsuya Takeuchi, Satoshi Kamiyama, Isamu Akasaki, Hideto Miyake, |
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| PDF Download Page |  PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(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) |
| Keyword(in English) | MOVPE / AlGaN / UV laser / VSL measurement |
| Paper # | ED2019-55,CPM2019-74,LQE2019-98 |
| Date of Issue | 2019-11-14 (ED, CPM, LQE) |
| Conference Information | |
| Committee | CPM / LQE / ED |
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| Conference Date | 2019/11/21(2days) |
| 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 |
| Chair | Mayumi Takeyama(Kitami Inst. of Tech.) / Hiroshi Aruga(Mitsubishi Electric) / Michihiko Suhara(TMU) |
| Vice Chair | Yuichi Nakamura(Toyohashi Univ. of Tech.) / Hiroshi Yasaka(Tohoku Univ.) / Hiroki Fujishiro(Tokyo Univ. of Science) |
| Secretary | Yuichi Nakamura(Hirosaki Univ.) / Hiroshi Yasaka(Furukawa Electric Industries) / Hiroki Fujishiro(Osaka Univ.) |
| Assistant | Yasuo Kimura(Tokyo Univ. of Tech.) / Tomoaki Terasako(Ehime Univ.) / Fumihiko Hirose(Yamagata Univ.) / Fumito Nakajima(NTT) / Junji Kotani(Fjitsu Lab.) / Takuya Tsutsumi(NTT) |
| Paper Information | |
| Registration To | Technical Committee on Component Parts and Materials / Technical Committee on Lasers and Quantum Electronics / Technical Committee on Electron Devices |
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| Language | JPN |
| 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 |
| 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.) |
| Date | 2019-11-22 |
| Paper # | ED2019-55,CPM2019-74,LQE2019-98 |
| Volume (vol) | vol.119 |
| Number (no) | ED-302,CPM-303,LQE-304 |
| Page | pp.pp.93-96(ED), pp.93-96(CPM), pp.93-96(LQE), |
| #Pages | 4 |
| Date of Issue | 2019-11-14 (ED, CPM, LQE) |