The smart Trick of CLBO Crystal That Nobody is Discussing
The smart Trick of CLBO Crystal That Nobody is Discussing
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Even so, as a way to method the crystal is very Highly developed production procedures are essential. For the reason that dawn of the crystal, working on this problem, we at the moment are the sole enterprise on the planet that could be processed Within this crystal.
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We summarized the current enhancement standing of the significant-energy DUV laser each within the wavelength of FHG with the 1-μm laser and at 193 nm. The the latest progress in the solid-condition/fiber laser, in addition to the nonlinear optical crystals, prompts not merely the average electricity but also the beam top quality (coherence) on the DUV lasers to an unparalleled level.
The standard energy with the NIR laser nonetheless has the likely to generally be enhanced to tens of watts like 70 W [26] Should the double-move configuration might be used for that Yb:YAG SCF amplifier stage. That's why, In case the conversion efficiency of 31% from NIR to DUV may very well be nevertheless managed at this greater energy situation, the average output ability in the DUV laser at 258 nm could be in excess of twenty W, which might be considered a impressive electric power amount with the DUV laser and lead to the unanticipated DUV laser machining outcomes. What's more, for top-ability DUV laser, the UV hurt with the nonlinear crystal, such as the windows for CLBO crystal and also the mirrors, is another essential parameter for long lasting and steady operation.
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The heartbeat duration of the second Stokes gentle was shortened to 5 ns as revealed in Figure 7a, only one-shot photo in the oscilloscope, which is a typical phenomenon in Raman laser [forty four] although the heart beat duration with the pump laser was ten ns.
Cesium Lithium Borate (CsLiB6O10 or CLBO) is the most effective non-linear crystal which generates ultraviolet harmonics from the Nd:YAG essential laser wavelength. In order to improve the injury threshold, low CLBO area roughness, by ultra-precision machining, is needed. As the CLBO crystal has easy hydroscopic response and micro scratches in machining, ultra-specific machining of your CLBO crystal is really a tough technical issue.
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The conversion effectiveness from fundamental NIR to DUV is from 5% to 36% in accordance with the described results in Desk one. Rising the conversion efficiency will decrease the burden on the look and setup of the fundamental laser amplifier as well as the electrical power intake. A great beam excellent of the fundamental laser can even contribute for the expanding from the conversion effectiveness and the appropriate electrical power intensity with the NIR and environmentally friendly laser in the SHG and FHG method, respectively. The very best conversion efficiencies from NIR to inexperienced and inexperienced to DUV laser by utilization of CLBO crystal are 70% and all around 50%, respectively [twelve], which corresponds into the conversion effectiveness of 35% from essential to DUV.
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