期刊
OPTICS EXPRESS
卷 25, 期 12, 页码 13046-13054出版社
OPTICAL SOC AMER
DOI: 10.1364/OE.25.013046
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资金
- Recruitment Program of Global Experts (1000 Talent Plan) of China
- e Program for Professor of Special Appointment (Eastern Scholar) at Shanghai Institutions of Higher Learning in China
- KAKENHI [15H03968, 26390075]
- JSPS [26390075]
- Photon Frontier Network Program of MEXT
- OPERANDO-OIL
- NEDO in Japan
- Grants-in-Aid for Scientific Research [26390075] Funding Source: KAKEN
We investigated the gain-switching properties of GaN-based ridge-waveguide lasers on free-standing GaN substrates with low-cost nanosecond current injection. It was observed that the output pulses with intense injection consisted of an isolated short pulse with a duration of around 50 ps at the high-energy side and a long steady-state component at the lower energy side independent of the electric pulse duration. The energy separation between the short pulse and steady-state component can be over 30 meV, favoring short-pulse generation with the spectral filtering technique. The duration of the steady-state component can be tuned freely by controlling the duration and voltage of the electric pulse, which is very useful for generating pulse-width-tunable optical pulses for various applications. (C) 2017 Optical Society of America
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