What Does CLBO Crystal Mean?
What Does CLBO Crystal Mean?
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Even so, as a way to procedure the crystal may be very State-of-the-art manufacturing approaches are necessary. Since the dawn of this crystal, working on this challenge, we at the moment are the only firm on the globe that may be processed During this crystal.
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We summarized the current improvement position in the high-energy DUV laser the two within the wavelength of FHG in the one-μm laser and at 193 nm. The modern advancement in the sound-point out/fiber laser, together with the nonlinear optical crystals, prompts not just the typical energy but additionally the beam good quality (coherence) on the DUV lasers to an unparalleled level.
The average ability on the NIR laser however has the prospective for being enhanced to tens of watts which include 70 W [26] If your double-pass configuration can be utilized with the Yb:YAG SCF amplifier stage. As a result, When the conversion effectiveness of 31% from NIR to DUV could possibly be continue to maintained at this better electrical power affliction, the typical output electricity of your DUV laser at 258 nm might be in excess of twenty W, which might certainly be a exceptional electrical power amount with the DUV laser and result in the unanticipated DUV laser machining final results. In addition, for prime-electrical power DUV laser, the UV hurt on the nonlinear crystal, including the windows for CLBO crystal and the mirrors, is another significant parameter for long term and secure Procedure.
On the flip side, the beam good quality of the bigger electrical power DUV laser would come to be worse resulting from more critical thermal and nonlinear outcomes. Hence, the frequency conversion procedures need to be diligently created to mitigate the aforementioned outcomes. Consequently, a high-energy DUV laser in the FHG of 1 μm with a great beam high quality could possibly be acquired and will be beneficial for acquiring the shorter wavelength DUV lasers for instance 193 nm by SFG.
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Cesium Lithium Borate (CsLiB6O10 or CLBO) is the best non-linear crystal which generates ultraviolet harmonics from here the Nd:YAG essential laser wavelength. So as to increase the damage threshold, very low CLBO surface area roughness, by extremely-precision machining, is needed. As the CLBO crystal has straightforward hydroscopic reaction and micro scratches in machining, extremely-exact machining of your CLBO crystal can be a tough complex issue.
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The conversion efficiency from essential NIR to DUV is from 5% to 36% in accordance with the documented results in Table one. Escalating the conversion performance will reduce the load on the look and setup of the basic laser amplifier along with the electrical power consumption. A superb beam high-quality of the fundamental laser may even add to the escalating on the conversion performance as well as the appropriate power intensity in the NIR and inexperienced laser from the SHG and FHG system, respectively. The best 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 elementary to DUV.
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