Strip-loaded semiconductor ring lasers employing multimode interference output couplers
- 23 May 1994
- journal article
- research article
- Published by AIP Publishing in Applied Physics Letters
- Vol. 64 (21) , 2788-2790
- https://doi.org/10.1063/1.111446
Abstract
Strip-loaded semiconductor ring lasers were successfully fabricated in the GaAs/AlGaAs material system. The radius was 400 μm and a 2×2 3 dB multimode interference coupler 320 μm long was used to extract the output signal. Devices operated continuous wave at 140 mA threshold current with a differential quantum efficiency of 7% per output, which we believe is the highest value reported to date for lasers of this type.Keywords
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