The smart Trick of CLBO Crystal That No One is Discussing
The smart Trick of CLBO Crystal That No One is Discussing
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Nevertheless, as a way to course of action the crystal is extremely Superior manufacturing procedures are essential. Because the dawn of this crystal, engaged on this problem, we at the moment are the one business in the world that could be processed In this particular crystal.
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We summarized The existing progress standing from the higher-ability DUV laser both equally with the wavelength of FHG from the one-μm laser and at 193 nm. The new advancement of the good-condition/fiber laser, along with the nonlinear optical crystals, prompts don't just the common energy but will also the beam good quality (coherence) of the DUV lasers to an unparalleled level.
For example, The existing concave OC could be replaced by a aircraft mirror which could mitigate the power density over the floor of M1 as well as the diamond. Furthermore, applying substantial destruction threshold coatings for M1 and diamond would also improve the output electric power with no damages. Then, the NIR laser at the 2nd Stokes wavelength may very well be higher more than enough, in addition to its fantastic beam top quality, to generate the final DUV laser at 193 nm with a substantial typical power.
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While in the scientific and industrial programs, the beam quality of your DUV laser is likewise an important parameter. Especially, the beam top quality in the DUV laser dramatically affects the laser machining benefits. The beam good quality on the DUV laser is set by that of the basic laser and also the crystal for the frequency conversion. Lately, a higher-power DUV laser (>ten W) at 258 nm was claimed that has a beam excellent of M2 < one.five, which was produced by FHG of a Yb:YAG laser at 1030 nm utilizing the CLBO crystal [13]. This laser would bring about a greater laser machining final result compared to the former DUV lasers with much larger M2.
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Cesium Lithium Borate (CsLiB6O10 or CLBO) is the best non-linear crystal which generates ultraviolet harmonics on the Nd:YAG elementary laser wavelength. So as to greatly enhance the destruction threshold, low CLBO floor roughness, by extremely-precision machining, is required. Since the CLBO crystal has straightforward hydroscopic reaction and micro scratches in machining, ultra-precise machining of the CLBO crystal is a difficult technological trouble.
Tunable ultraviolet laser source determined by strong-condition dye laser technologies and CsLiB6O10 harmonic era
The conversion effectiveness from fundamental NIR to DUV is from 5% to 36% based on the described brings about Desk 1. Escalating the conversion effectiveness will lessen the stress on the look and set up of the fundamental laser amplifier in addition to the electrical ability use. A good beam top quality of the basic laser may even lead to your expanding of your conversion performance together with the suitable electric power depth on the NIR and inexperienced laser from the SHG and FHG course of action, respectively. The very best conversion efficiencies from NIR read more to eco-friendly and eco-friendly to DUV laser by use of CLBO crystal are 70% and about 50%, respectively [twelve], which corresponds to your conversion effectiveness of 35% from basic to DUV.
The development of your 193-nm laser was shown by stages of SFG. So as to scale the DUV laser electricity successfully, a completely new notion of the 193-nm DUV laser era is presented based upon the diamond Raman laser.