A Simple Key For CLBO Crystal Unveiled
A Simple Key For CLBO Crystal Unveiled
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On the other hand, so that you can course of action the crystal is rather Superior manufacturing tactics are necessary. Since the dawn of the crystal, working on this obstacle, we are now the only real enterprise in the world that could be processed With this crystal.
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For instance, The present concave OC could be replaced by a airplane mirror which could mitigate the facility density within the surface area of M1 and also the diamond. Furthermore, using significant injury threshold coatings for M1 and diamond would also improve the output electric power without any damages. Then, the NIR laser for the 2nd Stokes wavelength could possibly be high more than enough, and also its good beam high-quality, to crank out the final DUV laser at 193 nm having a high normal electricity.
On the other hand, the beam excellent of the higher electrical power DUV laser would come to be worse due to far more serious thermal and nonlinear results. That's why, the frequency conversion procedures really should be carefully made to mitigate the aforementioned outcomes. So, a significant-energy DUV laser with the FHG of one μm with a very good beam high quality could possibly be acquired and will be advantageous for obtaining the shorter wavelength DUV lasers such as 193 nm by SFG.
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On one other facet, the facility scaling with the NIR laser is yet another part to enhance the ordinary ability with the 193-nm DUV laser. Because of the lack of the significant-electricity amplification Answer of your NIR laser (for example at 1553 nm), nonlinear frequency procedures like optical parameter oscillation (OPO) can be applied to produce a wavelength converter by shifting the wavelength from one μm to the desired wavelength together with obtaining relative increased electric power [21]. Not too long ago, a diamond Raman laser confirmed its means in achieving a high electric power along with a substantial conversion performance in the 1st Stokes on the one-μm laser [22,23], which means the chance to become applied in the 193-nm DUV laser generation because of its higher Raman get and large frequency change.
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Moreover, combining the reliable-point out laser with other nonlinear approach for example stimulated Raman scattering, NIR lasers might be obtained at new wavelengths with large ability and large beam excellent, which was tested through the more info evidence-of-basic principle experiment. This Raman laser plan provides a fresh path to the significant-energy DUV laser, In particular for the wavelength of 193 nm.
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The conversion performance from essential NIR to DUV is from five% to 36% based on the documented results in Desk 1. Expanding the conversion effectiveness will lessen the burden on the design and set up of the elemental laser amplifier plus the electric powered electrical power use. A great beam high quality of the basic laser can even add for the raising of your conversion efficiency along with the suitable electrical power depth with the NIR and environmentally friendly laser during the SHG and FHG process, respectively. The highest conversion efficiencies from NIR to inexperienced and inexperienced to DUV laser by utilization of CLBO crystal are 70% and all around 50%, respectively [12], which corresponds to the conversion performance of 35% from essential to DUV.
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