Getting My CLBO Crystal To Work
Getting My CLBO Crystal To Work
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The crucial element difficulty of ultraviolet coherent gentle resource primarily focuses on the development of nonlinear optical frequency conversion crystal in ultraviolet band. The nonlinear optical crystal has become the ailments for frequency transformation, so The expansion, dimensions, hurt resistance, conversion performance and allowable parameter array of nonlinear optical crystal are expected Progressively more.
On the flip side, the beam top quality of the greater electric power DUV laser would grow to be even worse on account of extra major thermal and nonlinear outcomes. Therefore, the frequency conversion processes need to be very carefully built to mitigate the aforementioned consequences. Hence, a significant-power DUV laser on the FHG of 1 μm with a good beam high quality could possibly be acquired and will be beneficial for getting the shorter wavelength DUV lasers which include 193 nm by SFG.
Both of those the 1040 nm and 1078 nm laser originate from one particular dual-wavelength Yb-doped fiber laser. Every laser is read more amplified by levels of fiber amplifier and Yb-doped products amplifier, respectively.
On the other side, the power scaling from the NIR laser is another aspect to increase the average ability of your 193-nm DUV laser. Mainly because of the deficiency of the large-energy amplification solution with the NIR laser (for example at 1553 nm), nonlinear frequency procedures including optical parameter oscillation (OPO) could be placed on produce a wavelength converter by shifting the wavelength from one μm to the desired wavelength and also getting relative larger electricity [21]. Not long ago, a diamond Raman laser showed its skill in accomplishing a superior electricity as well as a high conversion efficiency in the 1st Stokes with the one-μm laser [22,23], which suggests the chance for being utilized in the 193-nm DUV laser technology thanks to its large Raman achieve and enormous frequency change.
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Within the scientific and industrial programs, the beam good quality of your DUV laser can also be a vital parameter. Specially, the beam excellent in the DUV laser drastically affects the laser machining outcomes. The beam excellent of the DUV laser is set by that of the fundamental laser as well as crystal for that frequency conversion. Not too long ago, a superior-electricity DUV laser (>ten W) at 258 nm was documented using a beam high quality of M2 < one.five, which was generated by FHG of a Yb:YAG laser at 1030 nm using the CLBO crystal [13]. This laser would produce an improved laser machining end result in comparison with the former DUV lasers with greater M2.
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Cesium Lithium Borate (CsLiB6O10 or CLBO) is the most effective non-linear crystal which generates ultraviolet harmonics of the Nd:YAG basic laser wavelength. In order to improve the hurt threshold, very low CLBO area roughness, by extremely-precision machining, is needed. Because the CLBO crystal has effortless hydroscopic reaction and micro scratches in machining, extremely-precise machining with the CLBO crystal is really a tough technical problem.
Tunable ultraviolet laser supply determined by good-point out dye laser technologies and CsLiB6O10 harmonic era
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