5 Essential Elements For CLBO Crystal
5 Essential Elements For CLBO Crystal
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All-strong-point out ultraviolet lasers are actually widely Employed in the fields of mechanical flaw detection, lithography, micromachining and medication for the benefits of compact volume, lengthy existence, superior efficiency, great beam good quality, extensive tuning and slim spectral line, etc. Utilizing substantial electricity around-infrared coherent light-weight resource as the fundamental frequency supply dependant on nonlinear tuning technologies, building ultraviolet coherent radiation by multistage frequency conversion is considered to be a crucial technique to produce the ultraviolet coherent mild resource.
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As an illustration, The present concave OC could get replaced by a plane mirror which could mitigate the ability density within the surface area of M1 and also the diamond. Moreover, employing large injury threshold coatings for M1 and diamond would also Enhance the output electrical power without any damages. Then, the NIR laser on the 2nd Stokes wavelength may very well be superior enough, as well as its good beam quality, to make the final DUV laser at 193 nm with a high ordinary electric power.
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Due to the thermal lens outcome during the sound-state lasers, When the heating administration is insufficient, It isn't effortless to acquire the solid-point out laser with a superior electricity as well as a superior beam good quality simultaneously. Just lately, with the event of the thin disk laser and one-crystal fiber (SCF) laser, a high-electricity laser at the fundamental wavelength (one μm) were understood with a great beam excellent even with a TEM00 mode beam [4,24], which would be very good candidates for the elemental from the DUV laser technology. Yet another applicant for the basic will be the higher-electric power fiber laser which may be attained by coherent beam mix with M2 benefit under 1.
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Cesium Lithium Borate (CsLiB6O10 or CLBO) is the most effective non-linear crystal which generates ultraviolet harmonics on the Nd:YAG essential laser wavelength. So as to increase the hurt threshold, low CLBO surface roughness, by ultra-precision machining, is needed. Because the CLBO crystal has uncomplicated hydroscopic response and micro scratches in machining, extremely-specific machining of the CLBO crystal is actually a difficult technological problem.
Tunable ultraviolet laser supply based upon stable-point out dye laser technologies and CsLiB6O10 harmonic era
The conversion performance from fundamental NIR to DUV is from 5% to 36% based on the noted results in Desk one. Growing the conversion performance will reduce the stress on the design and set up of the basic laser amplifier along with the electrical energy usage. A superb beam good quality of the basic laser may also add into the escalating of the conversion effectiveness and also the appropriate energy intensity in the NIR and green laser while in the SHG and FHG procedure, respectively. The highest conversion efficiencies from NIR to eco-friendly and eco-friendly to DUV laser by utilization of CLBO crystal are 70% and close to 50%, respectively [twelve], which corresponds into the conversion here efficiency of 35% from basic to DUV.
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