A Review Of CLBO Crystal
A Review Of CLBO Crystal
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All-sound-condition ultraviolet lasers have already been broadly Utilized in the fields of mechanical flaw detection, lithography, micromachining and medication for the benefits of modest volume, extended existence, higher efficiency, superior beam high-quality, huge tuning and slim spectral line, and so on. Utilizing high ability in close proximity to-infrared coherent light supply as the fundamental frequency supply depending on nonlinear tuning engineering, making ultraviolet coherent radiation by multistage frequency conversion is considered a vital strategy to produce the ultraviolet coherent gentle resource.
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As an illustration, The existing concave OC could be replaced by a aircraft mirror which could mitigate the facility density around the floor of M1 and the diamond. Additionally, utilizing significant harm threshold coatings for M1 and diamond would also Enhance the output electric power with none damages. Then, the NIR laser in the 2nd Stokes wavelength could possibly be significant enough, in addition to its excellent beam good quality, to crank out the ultimate DUV laser at 193 nm with a significant normal ability.
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LBO is also a fantastic nonlinear crystal which is often placed on the SHG in the NIR to the eco-friendly. The DUV laser is often recognized by two levels of SFG in the LBO crystals given that there isn't a section-matching angle for LBO to transform the environmentally friendly laser at 515 nm or 532 nm into the DUV directly by SHG [sixteen]. Recently, the NSBBF crystal has also revealed its potential to acquire a superior conversion efficiency from 532 nm to 266 nm. The walk-off angle and deff of the NSBBF are almost comparable to Those people of CLBO [17].
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The heart beat length of the 2nd Stokes gentle was shortened to five ns as demonstrated in Determine 7a, one-shot picture within the oscilloscope, that's a standard phenomenon in Raman laser [44] even though the pulse length of your pump laser was 10 ns.
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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 check here significant as that of KDP. CLBO crystals is often grown from your stoichiometric melt with decreased viscosity.
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