CLBO Crystal Fundamentals Explained
CLBO Crystal Fundamentals Explained
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Nevertheless, in order to system the crystal is rather Innovative production approaches are essential. Since the dawn of the crystal, working on this challenge, we at the moment are the sole company on the globe that could be processed On this crystal.
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We summarized The existing advancement position with the substantial-electricity DUV laser the two with the wavelength of FHG of your 1-μm laser and at 193 nm. The recent progress from the good-state/fiber laser, as well as the nonlinear optical crystals, prompts not merely the common ability but additionally the beam top quality (coherence) with the DUV lasers to an unparalleled level.
The important thing challenge of ultraviolet coherent mild supply predominantly focuses on the event of nonlinear optical frequency conversion crystal in ultraviolet band. The nonlinear optical crystal is probably the disorders for frequency transformation, so The expansion, sizing, damage resistance, conversion efficiency and allowable parameter range of nonlinear optical crystal are demanded more and more.
Then again, the beam high-quality of the greater power DUV laser would grow to be worse as a consequence of much more critical thermal and nonlinear consequences. Therefore, the frequency conversion processes ought to be diligently created to mitigate the aforementioned outcomes. Thus, a large-electricity DUV laser within the FHG of one μm with a good beam top quality can be acquired and will be beneficial for obtaining the shorter wavelength DUV lasers like 193 nm by SFG.
Each the 1040 nm and 1078 nm laser come from a person twin-wavelength Yb-doped fiber laser. Every single 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 of your Nd:YAG essential laser wavelength. So that you can greatly enhance the problems threshold, lower CLBO surface area roughness, by ultra-precision machining, is needed. Since the CLBO crystal has quick hydroscopic response and micro scratches in machining, ultra-precise machining of your CLBO crystal is usually a tricky specialized issue.
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The conversion effectiveness from elementary NIR to DUV is from five% to 36% based on the documented ends in Table 1. Rising the conversion efficiency will reduce the burden on the design and set up of the basic laser amplifier and also the electric powered electrical power intake. A very good beam high quality of the basic laser can even contribute towards the expanding of your conversion performance as well as the right power depth with the NIR and inexperienced laser from the SHG and FHG course of action, respectively. The very best conversion efficiencies from NIR to eco-friendly and green to DUV laser by usage of CLBO crystal are 70% and all over fifty%, respectively [twelve], which corresponds to your conversion effectiveness of 35% from fundamental to DUV.
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