A Secret Weapon For CLBO Crystal
A Secret Weapon For CLBO Crystal
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Nonetheless, so as to approach the crystal is rather State-of-the-art manufacturing tactics are needed. Since the dawn of this crystal, engaged on this challenge, we are now the only business on earth which can be processed During this crystal.
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We summarized The present advancement position on the higher-electric power DUV laser both of those at the wavelength of FHG with the 1-μm laser and at 193 nm. The new advancement of the reliable-point out/fiber laser, plus the nonlinear optical crystals, prompts don't just the common ability but additionally the beam excellent (coherence) of the DUV lasers to an unprecedented degree.
The true secret dilemma of ultraviolet coherent gentle resource largely concentrates on the development of nonlinear optical frequency conversion crystal in ultraviolet band. The nonlinear optical crystal is probably the disorders for frequency transformation, so The expansion, dimensions, problems resistance, conversion effectiveness and allowable parameter variety of nonlinear optical crystal are necessary Increasingly more.
On the flip side, the beam top quality of the higher electricity DUV laser would become worse resulting from additional critical thermal and nonlinear effects. Therefore, the frequency conversion procedures ought to be thoroughly designed to mitigate the aforementioned effects. Hence, a substantial-electric power DUV laser within the FHG of one μm with a very good beam excellent could be attained and may be valuable for getting the shorter wavelength DUV lasers for instance 193 nm by SFG.
Both equally the 1040 nm and 1078 nm laser come from a single dual-wavelength Yb-doped fiber laser. Each laser is amplified by levels of fiber amplifier and Yb-doped resources amplifier, respectively.
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Cesium Lithium Borate (CsLiB6O10 or CLBO) is the simplest non-linear crystal which generates ultraviolet harmonics on the Nd:YAG fundamental laser wavelength. As a way to enhance the problems threshold, small CLBO area roughness, by extremely-precision machining, is necessary. As the CLBO crystal has straightforward hydroscopic reaction and micro scratches in machining, extremely-specific machining on the CLBO crystal is really a tricky technical issue.
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The conversion efficiency from elementary NIR to DUV is from five% to 36% according to the noted ends in Desk 1. Escalating the conversion effectiveness will decrease the stress on the design and setup of the fundamental laser amplifier together with the electric electrical power intake. A fantastic beam quality of the fundamental laser will even lead into the increasing from the conversion efficiency along with the appropriate electrical power intensity on the NIR and inexperienced laser from the SHG and FHG system, respectively. CLBO Crystal The very best conversion efficiencies from NIR to inexperienced and inexperienced to DUV laser by utilization of CLBO crystal are 70% and close to 50%, respectively [12], which corresponds towards the conversion efficiency of 35% from essential to DUV.
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