High Conversion Efficiency, Mid-Infrared Pulses Generated via Burst-Mode Fiber Laser Pumped Optical Parametric Oscillator
| Autor: | Peipei Jiang, Shuangshuang Cai, Yonghang Shen, Minjian Ruan, Bo Wu |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2020 |
| Předmět: |
Materials science
General Computer Science Mid infrared 02 engineering and technology 01 natural sciences law.invention 010309 optics Optics law Fiber laser 0103 physical sciences General Materials Science Burst mode (computing) Mid-infrared optical parametric oscillator Parametric statistics quasi-synchronously pumped burst-mode fiber laser business.industry Energy conversion efficiency General Engineering 021001 nanoscience & nanotechnology Laser Optical parametric oscillator lcsh:Electrical engineering. Electronics. Nuclear engineering 0210 nano-technology business lcsh:TK1-9971 |
| Zdroj: | IEEE Access, Vol 8, Pp 64725-64729 (2020) |
| ISSN: | 2169-3536 |
| Popis: | We present a mid-infrared optical parametric oscillator (OPO) with a high pump-to-idler conversion efficiency from $1.06~\mu \text{m}$ to $3.8~\mu \text{m}$ , which was quasi-synchronously pumped by a burst-mode fiber laser. The pump pulse was specially designed with a rectangular profile in temporal, which was composed of hundreds of ultrashort sub-pulses. By applying the quasi-synchronous pumping scheme, the buildup time of the parametric signal pulse could be minimized. No back-conversion effect was observed when the pump peak power was increased. A maximum pump-to-idler conversion efficiency of 19.6% was achieved when the number of intra-burst sub-pulses was set to be 240. By increasing the number of intra-burst sub-pulses to be about 480, the maximum average output power of 7.9 W at $3.8~\mu \text{m}$ was realized under pump power of 45.3 W. The corresponding pump-to-idler conversion efficiency was computed to be about 17.5%. The experimental results show an improvement of 40% in pump-to-idler conversion efficiency for this quasi-synchronously pumped OPO when compared with the conventional long laser pulse pumped OPO. |
| Databáze: | OpenAIRE |
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