The Basic Principles Of CLBO Crystal
The Basic Principles Of CLBO Crystal
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All-good-point out ultraviolet lasers are actually greatly Utilized in the fields of mechanical flaw detection, lithography, micromachining and drugs for the benefits of modest volume, extended existence, superior performance, superior beam quality, broad tuning and slim spectral line, and so on. Using higher energy near-infrared coherent light-weight supply as the fundamental frequency supply depending on nonlinear tuning technological innovation, generating ultraviolet coherent radiation by multistage frequency conversion is viewed as a crucial solution to build the ultraviolet coherent mild source.
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For illustration, The existing concave OC could get replaced by a plane mirror which could mitigate the power density on the area of M1 as well as diamond. Also, applying significant injury threshold coatings for M1 and diamond would also Increase the output electricity without any damages. Then, the NIR laser within the 2nd Stokes wavelength may be high ample, as well as its very good beam quality, to crank out the ultimate DUV laser at 193 nm that has a high average electricity.
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From the scientific and industrial apps, the beam top quality with the DUV laser can be a crucial parameter. Especially, the beam good quality from the DUV laser dramatically has an effect on the laser machining benefits. The beam high quality of the DUV laser is set by that of the fundamental laser as well as crystal for that frequency conversion. Lately, a superior-electrical power DUV laser (>ten W) at 258 nm was documented having a beam high quality of M2 < 1.five, which was created by FHG of a Yb:YAG laser at 1030 nm using the CLBO crystal [thirteen]. This laser would produce a far better laser machining end result when compared with the previous DUV lasers with greater M2.
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Moreover, combining the reliable-point out laser with other nonlinear process for example stimulated Raman scattering, NIR lasers could be reached at new wavelengths with large ability and large beam high-quality, which was tested because of the evidence-of-principle experiment. This Raman laser scheme CLBO Crystal gives a different path to the higher-electricity DUV laser, Primarily in the wavelength of 193 nm.
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The event in the 193-nm laser was demonstrated by levels of SFG. In order to scale the DUV laser ability efficiently, a different notion from the 193-nm DUV laser technology is offered based upon the diamond Raman laser.