The smart Trick of CLBO Crystal That Nobody is Discussing
The smart Trick of CLBO Crystal That Nobody is Discussing
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All-reliable-state ultraviolet lasers have already been broadly Utilized in the fields of mechanical flaw detection, lithography, micromachining and medicine for the advantages of small quantity, lengthy existence, large efficiency, very good beam good quality, vast tuning and narrow spectral line, and many others. Using higher ability in close proximity to-infrared coherent light supply as the basic frequency source based upon nonlinear tuning technological innovation, generating ultraviolet coherent radiation by multistage frequency conversion is viewed as a crucial technique to develop the ultraviolet coherent mild resource.
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In accordance with the evidence-of-basic principle experiment, the conversion efficiency of 23% implied the potential of attaining higher-energy at the 2nd Stokes wavelength on the Raman laser. If your pump laser of 1078 nm may be obtained at the standard electricity of 50 W, the output power of its 2nd Stokes wavelength at 1512 nm may be over ten W. The design on the Raman laser cavity should be optimized so as to avoid the problems of the M1 and diamond surface area.
The true secret difficulty of ultraviolet coherent gentle supply largely concentrates on the development of nonlinear optical frequency conversion crystal in ultraviolet band. The nonlinear optical crystal has become the ailments for frequency transformation, so the growth, dimensions, hurt resistance, conversion efficiency and allowable parameter variety of nonlinear optical crystal are needed A growing number of.
However, the beam top quality of this bigger electrical power DUV laser would grow to be even worse because of extra significant thermal and nonlinear results. Hence, the frequency conversion processes needs to be thoroughly created to mitigate the aforementioned outcomes. Therefore, a substantial-energy DUV laser for the FHG of 1 μm with a very good beam quality may be obtained and may be valuable for acquiring the shorter wavelength DUV lasers such as 193 nm by SFG.
LBO can be an outstanding nonlinear crystal which is usually placed on the SHG within the NIR to the environmentally friendly. The DUV laser will likely be understood by two phases of SFG while in the LBO crystals considering that there is absolutely no stage-matching angle for LBO to convert the environmentally friendly laser at 515 nm or 532 nm into the DUV specifically by SHG [16]. Not too long ago, the NSBBF crystal has also shown its probable to obtain a significant conversion efficiency from 532 nm to 266 nm. The wander-off angle and deff in the NSBBF are almost just like those of CLBO [seventeen].
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Its UV absorption edge reaches one hundred eighty nm. The successful nonlinear optical coefficient of CLBO for frequency doubling at 1064nm is about 2 times as substantial as that of KDP. CLBO crystals might be grown through the stoichiometric soften with reduced viscosity.
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