Examine This Report on CLBO Crystal
Examine This Report on CLBO Crystal
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All-solid-condition ultraviolet lasers have already been greatly used in the fields of mechanical flaw detection, lithography, micromachining and drugs for the advantages of little volume, very long everyday living, high efficiency, good beam excellent, large tuning and slim spectral line, etcetera. Utilizing high power in the vicinity of-infrared coherent mild resource as the basic frequency supply based on nonlinear tuning technologies, making ultraviolet coherent radiation by multistage frequency conversion is regarded as a significant approach to develop the ultraviolet coherent light supply.
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According to the proof-of-theory experiment, the conversion effectiveness of 23% implied the potential for attaining high-electrical power at the next Stokes wavelength in the Raman laser. In the event the pump laser of 1078 nm could possibly be acquired at the common electrical power of 50 W, the output electrical power of its 2nd Stokes wavelength at 1512 nm can be much more than ten W. The look in the Raman laser cavity ought to be optimized in order to steer clear of the problems on the M1 and diamond surface.
For example, The present concave OC could get replaced by a airplane mirror which could mitigate the power density within the surface area of M1 plus the diamond. In addition, employing large problems threshold coatings for M1 and diamond would also improve the output electricity with no damages. Then, the NIR laser with the 2nd Stokes wavelength might be substantial ample, together with its superior beam high quality, to create the final DUV laser at 193 nm which has a high ordinary electricity.
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Each the 1040 nm and 1078 nm laser originate from one twin-wavelength Yb-doped fiber laser. Every single laser is amplified by stages of fiber amplifier and Yb-doped resources amplifier, respectively.
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Cesium Lithium Borate (CsLiB6O10 or CLBO) is the most effective non-linear crystal which generates ultraviolet harmonics from the Nd:YAG fundamental laser wavelength. To be able to boost the damage threshold, lower CLBO surface area roughness, by extremely-precision machining, is necessary. Since the CLBO crystal has quick hydroscopic response and micro scratches in machining, ultra-exact machining of your CLBO crystal can be a hard complex issue.
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The conversion efficiency from basic NIR to DUV is from 5% to 36% according to the claimed brings about Desk 1. Increasing the conversion effectiveness read more will lessen the load on the look and setup of the elemental laser amplifier plus the electrical electric power consumption. A great beam top quality of the elemental laser will also lead for the rising on the conversion efficiency in addition to the suitable ability depth from the NIR and inexperienced laser during the SHG and FHG method, respectively. The very best conversion efficiencies from NIR to environmentally friendly and environmentally friendly to DUV laser by use of CLBO crystal are 70% and all over fifty%, respectively [12], which corresponds for the conversion performance of 35% from basic to DUV.
The development on the 193-nm laser was demonstrated by levels of SFG. As a way to scale the DUV laser power successfully, a fresh principle with the 193-nm DUV laser era is offered based upon the diamond Raman laser.