EFFICIENT INTERNAL OPTICAL PARAMETRIC OSCILLATION
EFFICIENT INTERNAL OPTICAL PARAMETRIC OSCILLATION
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DOI：
10.1063/1.1653206
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发表时间：
1970-04
影响因子：
4
通讯作者：
E. Ammann;J. Yarborough;M. Oshman;P. Montgomery
中科院分区：
文献类型：
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作者：
E. Ammann;J. Yarborough;M. Oshman;P. Montgomery
使用连续泵浦重复 Q 开关 1.06μ Nd:YAG 激光器谐振器内的 LiNbO3 晶体获得了高效的内部光学参量振荡。介质镜直接镀在晶体的平面平行端面上，并且激光器内部不使用聚焦光学器件。该振荡器以接近简并的方式工作，输出接近 2μ。观察到平均输出功率高达 350 mW，可用泵浦功率消耗 75%。这表示输出功率比之前报道的参量振荡器大一个数量级。内部振荡导致激光脉冲拉伸至正常长度的五倍，振荡器脉冲长度相应增加。该内部振荡器的操作与由同一激光器泵浦的类似外部振荡器的操作进行了比较。
Efficient internal optical parametric oscillation has been obtained using a LiNbO3 crystal inside the resonator of a continuously pumped repetitively Q‐switched 1.06μ Nd:YAG laser. Dielectric mirrors are coated directly on the plane‐parallel end faces of the crystal, and no focusing optics are used inside the laser. The oscillator operates near degenerate with outputs near 2μ. Average output powers as high as 350 mW and 75 % depletion of the available pump power are observed. This represents an order of magnitude larger output power than previously reported for a parametric oscillator. Internal oscillation causes stretching of the laser pulses to as much as five times the normal length, with corresponding increases in oscillator pulse length. Operation of this internal oscillator is compared to that of a similar external oscillator pumped by the same laser.