Blue vertical-cavity surface-emitting lasers based on second-harmonic generation grown on (311)B and (411)A GaAs substrates
| Autor: | Tetsuya Takeuchi, Dan E. Mars, Shigeru Nakagawa, Yoshikatsu Ichimura, Yasuhisa Kaneko, Norihide Yamada |
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| Rok vydání: | 2000 |
| Předmět: |
Surface (mathematics)
Materials science business.industry Energy conversion efficiency General Physics and Astronomy Second-harmonic generation Substrate (electronics) Laser Semiconductor laser theory Gallium arsenide law.invention chemistry.chemical_compound chemistry law Optoelectronics business Current density |
| Zdroj: | Journal of Applied Physics. 87:1597-1603 |
| ISSN: | 1089-7550 0021-8979 |
| DOI: | 10.1063/1.372065 |
| Popis: | We have studied blue vertical-cavity surface-emitting lasers (VCSELs) based on second-harmonic generation (SHG) grown on (411)A and (311)B GaAs substrates in order to investigate suitable substrate orientations for SHG-VCSELs. The comparison among substrate orientations has been made on three parameters, SHG conversion efficiency, transparency current density and gain coefficient. The transparency current density and the gain coefficient are characterized by edge emitting lasers grown on the above substrates. We also discuss the transparency current density and the gain coefficient for (311)A reported previously by Takahashi et al. [M. Takahashi, M. Hirai, K. Fujita, N. Egami, and K. Iga, J. Appl. Phys. 82, 4551 (1997)]. SHG conversion efficiency is 38 and 30% W for SHG-VCSELs grown on (311)B and (411)A substrates, respectively, which is consistent with theory, assuming identical nonlinear coefficients for the A face and B face. Transparency current density for (311)A, (311)B and (411)A is 80, 105 and 60 ... |
| Databáze: | OpenAIRE |
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