5 Easy Facts About CLBO Crystal Described
5 Easy Facts About CLBO Crystal Described
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In accordance with the evidence-of-basic principle experiment, the conversion efficiency of 23% implied the potential of accomplishing high-energy at the second Stokes wavelength in the Raman laser. In case the pump laser of 1078 nm can be attained at the standard power of fifty W, the output electric power of its 2nd Stokes wavelength at 1512 nm could be more than ten W. The look in the Raman laser cavity must be optimized to be able to avoid the destruction with the M1 and diamond surface area.
The average ability with the NIR laser however has the likely for being enhanced to tens of watts including 70 W [26] Should the double-pass configuration may be used to the Yb:YAG SCF amplifier stage. That's why, When the conversion performance of 31% from NIR to DUV could possibly be still preserved at this increased power issue, the standard output electrical power with the DUV laser at 258 nm could be over twenty W, which might be considered a amazing power level for the DUV laser and bring about the unanticipated DUV laser machining effects. Also, for top-ability DUV laser, the UV destruction of your nonlinear crystal, such as the windows for CLBO crystal as well as the mirrors, is another essential parameter for long-lasting and steady operation.
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LBO is usually a superb nonlinear crystal which is usually placed on the SHG from the NIR towards the inexperienced. The DUV laser will likely be recognized by two levels of SFG in the LBO crystals considering that there is not any phase-matching angle for LBO to transform the green laser at 515 nm or 532 nm to the DUV straight by SHG [16]. Lately, the NSBBF crystal has also shown its potential to acquire a significant conversion effectiveness from 532 nm to 266 nm. The stroll-off angle and deff in the NSBBF are Practically much like These of CLBO [seventeen].
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While in the scientific and industrial programs, the beam good quality on the DUV laser can be a vital parameter. Specifically, the beam high quality from the DUV laser considerably influences the laser machining results. The beam high-quality on the DUV laser is determined by that of the elemental laser as well as the crystal for the frequency conversion. Not long ago, a higher-ability DUV laser (>10 W) at 258 nm was described having a beam excellent of M2 < 1.5, which was produced by FHG of the Yb:YAG laser at 1030 nm utilizing the CLBO crystal [13]. This laser would bring about a far better laser machining result when compared with the former DUV lasers with bigger M2.
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Cesium Lithium Borate (CsLiB6O10 or CLBO) is the simplest non-linear crystal which generates ultraviolet harmonics with the Nd:YAG elementary laser wavelength. In an effort to increase the injury threshold, minimal CLBO surface area roughness, by extremely-precision machining, is needed. Since the CLBO crystal has simple hydroscopic response and micro scratches in machining, ultra-specific machining on the CLBO crystal is really a difficult complex issue.
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Its UV absorption edge reaches one hundred eighty nm. The successful nonlinear optical coefficient of CLBO for frequency doubling at 1064nm is about twice as significant as that of KDP. CLBO crystals is often grown in the stoichiometric soften with reduced viscosity.
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