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激光倍频技术是将频率为ω的光,通过晶体中的非线性作用,经过倍频和谐波从激光腔输出的激光包括多个频率的激光。然而,实际应用中需要单频率的激光,所以有必要设计一套分光系统将多频率输出的激光以单频激光输出。介绍了应用多层介质膜反射与透射的原理,设计一套分光系统将波长1064nm的激光器经倍频和三次谐波输出的包含有波长1064、532、355nm的激光分开,并分别以1064、532、355nm的激光输出,以满足不同应用的需要。
Laser frequency doubling technology is the frequency of ω light through the crystal in the non-linear effect, after the harmonic multiplication and harmonic laser output from the laser cavity, including multiple frequency laser. However, in practice, a single-frequency laser is needed. Therefore, it is necessary to design a spectroscopic system to output the multi-frequency laser to the single-frequency laser. The principle of reflection and transmission of multi-layer dielectric film is introduced. A spectroscopic system is designed to separate the lasers with wavelength of 1064, 532 and 355 nm by doubling the frequency and the third harmonic of the laser with the wavelength of 1064 nm. , 355nm laser output, to meet the needs of different applications.