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    • 32. 发明授权
    • Method of producing nonlinear optical crystal CdSiP2
    • 制备非晶光学晶体CdSiP2的方法
    • US08493649B2
    • 2013-07-23
    • US13761203
    • 2013-02-07
    • BAE Systems Information and Electronic Systems Integration Inc.
    • Peter G. SchunemannKevin T. Zawilski
    • C30B11/00C09K11/54
    • C30B11/003C30B11/02C30B11/12C30B29/10G02F1/3551
    • CdSiP2 crystals with sizes and optical quality suitable for use as nonlinear optical devices are disclosed, as well as NLO devices based thereupon. A method of growing the crystals by directional solidification from a stoichiometric melt is also disclosed. The disclosed NLO crystals have a higher nonlinear coefficient than prior art crystals that can be pumped by solid state lasers, and are particularly useful for frequency shifting 1.06 μm, 1.55 μm, and 2 μm lasers to wavelengths between 2 μm and 10 μm. Due to the high thermal conductivity and low losses of the claimed CdSiP2 crystals, average output power can exceed 10 W without severe thermal lensing. A 6.45 μm laser source for use as a medical laser scalpel is also disclosed, in which a CdSiP2 crystal is configured for non-critical phase matching, pumped by a 1064 nm Nd:YAG laser, and temperature-tuned to produce output at 6.45 μm.
    • 公开了适合用作非线性光学器件的尺寸和光学质量的CdSiP 2晶体以及基于此的NLO器件。 还公开了通过来自化学计量熔体的定向凝固来生长晶体的方法。 所公开的NLO晶体具有比可由固态激光器泵浦的现有技术晶体更高的非线性系数,并且对于在2mum至10um之间的波长的1.06μm,1.55μm和2μm激光器的频移特别有用。 由于所要求的CdSiP2晶体的高导热性和低损耗,平均输出功率可以超过10W而没有严重的热透镜。 还公开了一种用作医疗激光手术刀的6.45毫米激光源,其中将CdSiP2晶体配置为非临界相位匹配,由1064nm Nd:YAG激光器泵浦,并进行温度调节以产生6.45mum的输出 。