Indicators on CLBO Crystal You Should Know
Indicators on CLBO Crystal You Should Know
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All-stable-point out ultraviolet lasers are actually extensively Utilized in the fields of mechanical flaw detection, lithography, micromachining and medicine for the advantages of little quantity, extensive life, high effectiveness, fantastic beam quality, wide tuning and slender spectral line, etc. Employing superior ability near-infrared coherent gentle resource as the elemental frequency supply depending on nonlinear tuning engineering, building ultraviolet coherent radiation by multistage frequency conversion is considered an important strategy to develop the ultraviolet coherent light-weight source.
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Based on the evidence-of-principle experiment, the conversion effectiveness of 23% implied the opportunity of achieving high-energy at the 2nd Stokes wavelength of your Raman laser. Should the pump laser of 1078 nm can be attained at the average electric power of 50 W, the output ability of its 2nd Stokes wavelength at 1512 nm may very well be over ten W. The design with the Raman laser cavity ought to be optimized so that you can avoid the damage of your M1 and diamond floor.
The average power of your NIR laser however has the likely for being improved to tens of watts such as 70 W [26] Should the double-move configuration could be utilized to the Yb:YAG SCF amplifier stage. Hence, If your conversion effectiveness of 31% from NIR to DUV could be continue to managed at this greater power situation, the typical output ability from the DUV laser at 258 nm could be over 20 W, which might certainly be a remarkable energy amount for the DUV laser and result in the unanticipated DUV laser machining final results. Additionally, for high-energy DUV laser, the UV injury on the nonlinear crystal, such as the windows for CLBO crystal along with the mirrors, click here is an additional crucial parameter for lasting and steady operation.
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LBO can also be an excellent nonlinear crystal which is usually placed on the SHG within the NIR towards the eco-friendly. The DUV laser is frequently understood by two levels of SFG within the LBO crystals since there is absolutely no period-matching angle for LBO to transform the inexperienced laser at 515 nm or 532 nm for the DUV instantly by SHG [sixteen]. Lately, the NSBBF crystal has also proven its likely to get a substantial conversion effectiveness from 532 nm to 266 nm. The walk-off angle and deff of your NSBBF are Pretty much just like People of CLBO [17].
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Cesium Lithium Borate (CsLiB6O10 or CLBO) is the best non-linear crystal which generates ultraviolet harmonics on the Nd:YAG basic laser wavelength. In an effort to boost the harm threshold, reduced CLBO area roughness, by extremely-precision machining, is needed. As the CLBO crystal has effortless hydroscopic reaction and micro scratches in machining, extremely-precise machining of your CLBO crystal is often a tricky specialized problem.
The beam profile revealed in Figure 7b demonstrated an excellent beam excellent as on the list of deserves of Raman laser, which might be effective to generate a 193-nm DUV laser with a high quality beam.
Its UV absorption edge reaches a hundred and eighty nm. The powerful nonlinear optical coefficient of CLBO for frequency doubling at 1064nm is about twice as substantial as that of KDP. CLBO crystals could be developed from your stoichiometric soften with lower viscosity.
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