Not known Factual Statements About CLBO Crystal
Not known Factual Statements About CLBO Crystal
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The key challenge of ultraviolet coherent light source mainly focuses on the development of nonlinear optical frequency conversion crystal in ultraviolet band. The nonlinear optical crystal is one of the ailments for frequency transformation, so the growth, dimension, hurt resistance, conversion performance and allowable parameter range of nonlinear optical crystal are required An increasing number of.
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Each the 1040 nm and 1078 nm laser originate from one twin-wavelength Yb-doped fiber laser. Each and every laser is amplified by phases of fiber amplifier and Yb-doped supplies amplifier, respectively.
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During the scientific and industrial programs, the beam top quality with the DUV laser is likewise a crucial parameter. Notably, the beam good quality of your DUV laser significantly impacts the laser machining final results. The beam high-quality on the DUV laser is determined by that of the basic laser and also the crystal for that frequency conversion. Just lately, a substantial-electric power DUV laser (>ten W) at 258 nm was reported with a beam good quality of M2 < one.5, which was created by FHG of the Yb:YAG laser at 1030 nm utilizing the CLBO crystal [thirteen]. This laser would bring on a greater laser machining final result when compared with the former DUV lasers with bigger M2.
The heart beat duration of the next Stokes light-weight was shortened to 5 ns as demonstrated in Determine 7a, just one-shot picture in the oscilloscope, which happens to be a standard phenomenon in Raman laser [44] although the heartbeat length on the pump laser was ten ns.
Cesium Lithium Borate (CsLiB6O10 or CLBO) is the most effective non-linear crystal which generates ultraviolet harmonics in the Nd:YAG essential laser wavelength. So as to increase the destruction threshold, very low CLBO area roughness, by extremely-precision machining, is necessary. Because the CLBO crystal has straightforward hydroscopic reaction and micro scratches in machining, extremely-exact machining of your CLBO crystal is actually a tricky specialized dilemma.
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The conversion efficiency from elementary NIR to DUV is from 5% to 36% in accordance with the reported leads to Desk one. Expanding the conversion effectiveness will decrease the load on the look and set up of the elemental laser amplifier plus the electric powered energy use. A great beam high quality of the fundamental laser may also add to your escalating from the conversion effectiveness and also the right electric power intensity with the NIR and inexperienced laser within the SHG and FHG system, respectively. The very best conversion efficiencies from NIR to get more info green and environmentally friendly to DUV laser by usage of CLBO crystal are 70% and all over 50%, respectively [12], which corresponds to the conversion effectiveness of 35% from elementary to DUV.
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