| Presentation | 2002/6/7 Time and Spatial Resolved Observation of the Photothermal Processes for the Low Dislocated GaN Koichi OKAMOTO, Kenichi INOUE, Yoichi KAWAKAMI, Shigeo FUJITA, Jungkwoun CHOI, Masahide TERAZIMA, Ayumu TSUJIMURA, Isao KIDOGUCHI, |
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| PDF Download Page | PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | Time and spatial resolved observation of the photothermal process for the low dislocated GaN was succeeded by using the microscopic transient lens technique. Obtained signals were constructed on the concave and convexo lens components due to the spatial modulation of carrier density and temperature, respectively. Carrier recombination lifetimes, heat generations, and thermal conductivities were obtained by analyzing the signal intensities and time profiles. In the case of air-bridged lateral epitaxial grown (ABLEG) GaN, which has seed region (threading dislocation density (TDD)=1-2X10^9 cm^2) and wing region (TDD=1-2X10^6 cm^2), we found that the thermal conductivities were not so different at each region, but the amount of the heat generation at the weed regions were much smaller than that at the seed regions. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | Microscopic Transient lens / ABLEG / GaN / Threading dislocation density / Nonradiative recombination process / photothermal process / Thermal conductivity |
| Paper # | LQE2002-51 |
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| Conference Information | |
| Committee | LQE |
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| Conference Date | 2002/6/7(1days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | |
| Chair | |
| Vice Chair | |
| Secretary | |
| Assistant | |
| Paper Information | |
| Registration To | Lasers and Quantum Electronics (LQE) |
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| Language | JPN |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Time and Spatial Resolved Observation of the Photothermal Processes for the Low Dislocated GaN |
| Sub Title (in English) | |
| Keyword(1) | Microscopic Transient lens |
| Keyword(2) | ABLEG |
| Keyword(3) | GaN |
| Keyword(4) | Threading dislocation density |
| Keyword(5) | Nonradiative recombination process |
| Keyword(6) | photothermal process |
| Keyword(7) | Thermal conductivity |
| 1st Author's Name | Koichi OKAMOTO |
| 1st Author's Affiliation | Graduate School of Engineering, Kyoto University() |
| 2nd Author's Name | Kenichi INOUE |
| 2nd Author's Affiliation | Graduate School of Engineering, Kyoto University |
| 3rd Author's Name | Yoichi KAWAKAMI |
| 3rd Author's Affiliation | Graduate School of Engineering, Kyoto University |
| 4th Author's Name | Shigeo FUJITA |
| 4th Author's Affiliation | Graduate School of Engineering, Kyoto University |
| 5th Author's Name | Jungkwoun CHOI |
| 5th Author's Affiliation | Graduate School of Science, Kyoto University |
| 6th Author's Name | Masahide TERAZIMA |
| 6th Author's Affiliation | Graduate School of Science, Kyoto University |
| 7th Author's Name | Ayumu TSUJIMURA |
| 7th Author's Affiliation | Matsushita Electric Industrial, Co., Ltd. |
| 8th Author's Name | Isao KIDOGUCHI |
| 8th Author's Affiliation | Matsushita Electric Industrial, Co., Ltd. |
| Date | 2002/6/7 |
| Paper # | LQE2002-51 |
| Volume (vol) | vol.102 |
| Number (no) | 118 |
| Page | pp.pp.- |
| #Pages | 4 |
| Date of Issue | |