Injection-seeded tunable mid-infrared pulses generated by difference frequency mixing
Injection-seeded tunable mid-infrared pulses generated by difference frequency mixing
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DOI：
10.7567/jjap.56.032101
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发表时间：
2017-01
影响因子：
1.5
通讯作者：
Y. Miyamoto;H. Hara;T. Masuda;T. Hiraki;N. Sasao;S. Uetake
中科院分区：
文献类型：
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作者：
Y. Miyamoto;H. Hara;T. Masuda;T. Hiraki;N. Sasao;S. Uetake
我们报道了具有频率可调谐性、窄线宽和高脉冲能量的纳秒中红外脉冲的产生。这些脉冲是通过在砷酸氧钛钾晶体中注入种子近红外脉冲之间的频率混合获得的。连续波外腔激光二极管或钛宝石环形激光器被用作近红外脉冲的可调谐种子源。所产生的中红外脉冲的典型能量范围为0.4 - 1毫焦/脉冲。调谐波长范围为3142至4806纳米。通过观测气态一氧化碳在4587纳米处的振转吸收线，证实了中红外脉冲具有1.4吉赫兹的窄线宽和良好的频率再现性。
We report on the generation of nanosecond mid-infrared pulses having frequency tunability, a narrow linewidth, and a high pulse energy. These pulses are obtained by frequency mixing between injection-seeded near-infrared pulses in potassium titanyl arsenate crystals. A continuous-wave external cavity laser diode or a Ti:sapphire ring laser is used as a tunable seeding source for the near-infrared pulses. The typical energy of the generated mid-infrared pulses is in the range of 0.4–1 mJ/pulse. The tuning wavelength ranges from 3142 to 4806 nm. A narrow linewidth of 1.4 GHz and good frequency reproducibility of the mid-infrared pulses are confirmed by observing a rovibrational absorption line of gaseous carbon monoxide at 4587 nm.