All-strong-state ultraviolet lasers are already commonly Employed in the fields of mechanical flaw detection, lithography, micromachining and drugs for some great benefits of smaller quantity, extensive life, substantial performance, very good beam top quality, wide tuning and slender spectral line, and so forth. Utilizing superior electrical power around-infrared coherent light supply as the fundamental frequency resource dependant on nonlinear tuning technology, building ultraviolet coherent radiation by multistage frequency conversion is viewed as an essential technique to develop the ultraviolet coherent mild supply.
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As an example, The existing concave OC could be replaced by a airplane mirror which could mitigate the ability density on the floor of M1 and also the diamond. Additionally, using large hurt threshold coatings for M1 and diamond would also improve the output ability without any damages. Then, the NIR laser with the 2nd Stokes wavelength may be large ample, and its great beam excellent, to produce the final DUV laser at 193 nm by using a high regular electric power.
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LBO can be an outstanding nonlinear crystal which is often placed on the SHG from your NIR for the green. The DUV laser will likely be recognized by two stages of SFG in the LBO crystals since there is absolutely no period-matching angle for LBO to convert the inexperienced laser at 515 nm or 532 nm to the DUV instantly by SHG [sixteen]. Lately, the NSBBF crystal has also revealed its possible to obtain a superior conversion efficiency from 532 nm to 266 nm. The stroll-off angle and deff of your NSBBF are almost comparable to These of CLBO [17].
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Its UV absorption edge reaches 180 nm. The productive nonlinear optical coefficient of CLBO for frequency doubling at 1064nm is about twice as significant as that of KDP. CLBO crystals might be grown from your stoichiometric soften with decreased viscosity.
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