New Step by Step Map For CLBO Crystal
New Step by Step Map For CLBO Crystal
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The common electric power of your NIR laser continue to has the possible to get enhanced to tens of watts for example 70 W [26] If your double-go configuration can be used for your Yb:YAG SCF amplifier stage. Consequently, When the conversion efficiency of 31% from NIR to DUV could possibly be nonetheless preserved at this higher electricity condition, the standard output electricity from the DUV laser at 258 nm may very well be greater than twenty W, which would be described as a amazing energy stage for that DUV laser and bring on the unanticipated DUV laser machining success. Additionally, for high-electric power DUV laser, the UV harm on the nonlinear crystal, such as the Home windows for CLBO crystal and the mirrors, is an additional critical parameter for long lasting and stable operation.
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Both the 1040 nm and 1078 nm laser come from one twin-wavelength Yb-doped fiber laser. Each laser is amplified by levels of fiber amplifier and Yb-doped products amplifier, respectively.
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The heartbeat duration of the second Stokes mild was shortened to five ns as shown in Determine 7a, an individual-shot picture within the oscilloscope, and that is a common phenomenon in Raman laser [forty four] when the pulse length from the pump laser was ten ns.
Cesium Lithium Borate (CsLiB6O10 or CLBO) is the most effective non-linear crystal which generates ultraviolet harmonics in the Nd:YAG basic laser wavelength. As a way to boost the harm threshold, small CLBO floor roughness, by ultra-precision machining, is needed. As the CLBO crystal has quick hydroscopic response and micro scratches in machining, ultra-specific machining with the CLBO crystal can be a complicated technical trouble.
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The conversion efficiency from essential NIR to DUV is from 5% to 36% according to the described leads to Desk 1. Increasing the conversion effectiveness will lessen the burden on the look and set up of the fundamental laser amplifier and also the electrical ability consumption. A fantastic beam quality of the basic laser will likely contribute for the raising of the conversion efficiency and also the right ability depth from the NIR and green laser from the SHG and FHG course of action, respectively. The best conversion efficiencies from NIR to green and inexperienced to DUV laser by utilization of CLBO crystal are 70% and about fifty%, respectively [12], which corresponds into the conversion efficiency of 35% from essential to DUV.
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