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首页> 外文期刊>Optics Letters >Mid-infrared pulsed nanosecond difference frequency generation of oxide LGN crystal up to 5.7 mu m
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Mid-infrared pulsed nanosecond difference frequency generation of oxide LGN crystal up to 5.7 mu m

机译：中红外脉冲纳秒差频产生氧化物LGN晶体高达5.7亩

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摘要

We demonstrate the tunable difference frequency generation (DFG) of an oxide La3Ga5.5Nb0.5O14 (LGN) crystal pumped by near-infrared lasers with nanosecond pulses for the first time to our knowledge. The type I and II phase-matching conditions of DFG were calculated in the mid-infrared region. With the processed LGN crystals, tunable lasers in the wavelength range from 4.4 to 5.7 mu m and 4.56 to 5.6 mu m were achieved under type II and I phase-matching conditions, respectively, with the maximum output energy of 13.1 mu J, which agreed well with the theoretical calculation. This work provides the kind of promising mid-infrared nonlinear crystals for the pumping of nanosecond pulsed lasers as well as a tunable mid-infrared laser source at a wavelength over 5 mu m in further photonic applications. (C) 2021 Optical Society of America
机译：我们演示了氧化物La3Ga5的可调谐差频产生（DFG）。5Nb0。据我们所知，首次采用纳秒脉冲近红外激光泵浦5O14（LGN）晶体。计算了DFG在中红外区的I型和II型相位匹配条件。利用加工后的LGN晶体，在II型和I型相位匹配条件下，分别获得了波长范围为4.4至5.7μm和4.56至5.6μm的可调谐激光器，最大输出能量为13.1μJ，与理论计算结果吻合良好。这项工作为纳秒脉冲激光器的泵浦提供了一种很有前途的中红外非线性晶体，也为进一步的光子应用提供了波长超过5μm的可调谐中红外激光源。（2021）美国光学学会

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