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首页> 外文期刊>Optics Letters >Continuous-wave, multimilliwatt, mid-infrared source tunable across 6.4-7.5 mu m based on orientation-patterned GaAs
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Continuous-wave, multimilliwatt, mid-infrared source tunable across 6.4-7.5 mu m based on orientation-patterned GaAs

机译:基于取向图案化的砷化镓,连续波,数毫瓦,中红外源可在6.4-7.5微米范围内调节

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We report a continuous-wave (cw) source of tunable mid-infrared radiation providing tens of milliwatt of output power in the 6460-7517 nm spectral range. The source is based on difference-frequency generation (DFG) in orientation-patterned (OP)-GaAs pumped by a Tm-fiber laser at 2010 nm and a 1064 nm-Yb-fiber-pumped cw optical parametric oscillator. Using a 25.7-mm-long OP-GaAs crystal, we have generated up to 51.1 mW of output power at 6790 nm, with >40 mW and >20 mW across 32% and 80% of the mid-infrared tuning range, respectively, which is to the best of our knowledge the highest tunable cw power generated in OP-GaAs in this spectral range. The DFG output at maximum power exhibits passive power stability better than 2.3% rms over more than 1 h and a frequency stability of 1.8 GHz over more than 1 min, in high spatial beam quality. The system and crystal performance at high pump powers have been studied. (C) 2014 Optical Society of America
机译:我们报告了可调中红外辐射的连续波(cw)源,在6460-7517 nm光谱范围内提供数十毫瓦的输出功率。光源基于2010年由Tm光纤激光器和1064 nm Yb光纤泵浦连续波光学参量振荡器泵浦的取向图案(OP)-GaAs中的差频产生(DFG)。使用25.7毫米长的OP-GaAs晶体,我们在6790 nm处产生了高达51.1 mW的输出功率,在中红外调谐范围的32%和80%上分别具有> 40 mW和> 20 mW,据我们所知,在该光谱范围内,OP-GaAs产生的最大可调谐CW功率。在高空间波束质量下,最大功率下的DFG输出在1小时以上的时间内显示出优于2.3%rms的无源功率稳定性,在1分钟以上的时间内显示出1.8 GHz的频率稳定性。研究了高泵浦功率下的系统和晶体性能。 (C)2014年美国眼镜学会

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