5 Essential Elements For CLBO Crystal
5 Essential Elements For CLBO Crystal
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For instance, The existing concave OC could get replaced by a airplane mirror which could mitigate the power density within the area of M1 as well as diamond. Also, employing higher destruction threshold coatings for M1 and diamond would also Increase the output electrical power with none damages. Then, the NIR laser on the 2nd Stokes wavelength may be higher more than enough, along with its superior beam excellent, to crank out the final DUV laser at 193 nm by using a higher regular power.
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As a result of thermal lens influence inside the good-condition lasers, Should the heating management is insufficient, It's not at all straightforward to get the solid-condition laser that has a high electrical power in addition to a high beam quality concurrently. Not long ago, with the event of the thin disk laser and single-crystal fiber (SCF) laser, a significant-power laser at the fundamental wavelength (1 μm) had been realized with an excellent beam excellent even with a TEM00 mode beam [four,24], which would be excellent candidates for the fundamental of the DUV laser technology. Another candidate for the fundamental is definitely the superior-electric power fiber laser which may be attained by coherent beam mix with M2 worth lower than 1.
On the opposite aspect, the facility scaling of the NIR laser is yet another factor to raise the average electric power in the 193-nm DUV laser. Because of the deficiency of the higher-electric power amplification Answer on the NIR laser (for example at 1553 nm), nonlinear frequency procedures such as optical parameter oscillation (OPO) may be placed on make a wavelength converter by shifting the wavelength from one μm to the specified wavelength and getting relative higher energy [21]. Not long ago, a diamond Raman laser confirmed its potential in obtaining a significant ability and a higher conversion efficiency in the 1st Stokes of your 1-μm laser [22,23], which implies the likelihood being used in the 193-nm DUV laser era as a consequence of its superior Raman attain and enormous frequency change.
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Cesium Lithium Borate (CsLiB6O10 or CLBO) is the most effective non-linear crystal which generates ultraviolet harmonics of the Nd:YAG essential laser wavelength. To be able to enrich the hurt threshold, minimal CLBO surface roughness, by extremely-precision machining, is needed. As the CLBO crystal has straightforward hydroscopic response and micro scratches in machining, ultra-specific machining on the CLBO crystal is often a challenging technological difficulty.
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Its UV absorption edge reaches a hundred and eighty nm. The productive nonlinear optical coefficient of CLBO for frequency doubling at 1064nm is about two times as big as that of KDP. CLBO crystals may be developed through the stoichiometric melt with decreased viscosity.
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