Indicators on CLBO Crystal You Should Know
Indicators on CLBO Crystal You Should Know
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All-stable-condition ultraviolet lasers have been widely used in the fields of mechanical flaw detection, lithography, micromachining and drugs for the benefits of compact quantity, long daily life, higher effectiveness, very good beam high-quality, huge tuning and narrow spectral line, and so on. Utilizing substantial electrical power in the vicinity of-infrared coherent light resource as the fundamental frequency source based on nonlinear tuning engineering, making ultraviolet coherent radiation by multistage frequency conversion is considered to be an important strategy to create the ultraviolet coherent gentle resource.
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The standard energy from the NIR laser still has the opportunity to get improved to tens of watts for instance 70 W [26] In case the double-pass configuration may very well be utilized for that Yb:YAG SCF amplifier phase. For this reason, In the event the conversion performance of 31% from NIR to DUV may be still taken care of at this bigger electrical power ailment, the typical output electricity of your DUV laser at 258 nm may very well be a lot more than 20 W, which might become a outstanding power amount with the DUV laser and cause the unanticipated DUV laser machining outcomes. Also, for high-electricity DUV laser, the UV injury from the nonlinear crystal, such as the windows for CLBO crystal and the mirrors, is yet another significant parameter for long term and secure operation.
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Cesium click here Lithium Borate (CsLiB6O10 or CLBO) is the simplest non-linear crystal which generates ultraviolet harmonics from the Nd:YAG basic laser wavelength. So as to increase the problems threshold, low CLBO floor roughness, by extremely-precision machining, is needed. Because the CLBO crystal has quick hydroscopic response and micro scratches in machining, ultra-precise machining with the CLBO crystal is usually a hard technical issue.
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The conversion performance from basic NIR to DUV is from five% to 36% according to the claimed leads to Desk one. Escalating the conversion performance will decrease the stress on the design and set up of the elemental laser amplifier in addition to the electric powered energy intake. A very good beam top quality of the basic laser will likely contribute for the raising of the conversion efficiency and also the suitable electric power depth of your NIR and environmentally friendly laser in the SHG and FHG procedure, respectively. The highest conversion efficiencies from NIR to green and environmentally friendly to DUV laser by usage of CLBO crystal are 70% and all over fifty%, respectively [12], which corresponds towards the conversion efficiency of 35% from basic to DUV.
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