The smart Trick of CLBO Crystal That Nobody is Discussing
The smart Trick of CLBO Crystal That Nobody is Discussing
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The main element trouble of ultraviolet coherent light source primarily focuses on the event of nonlinear optical frequency conversion crystal in ultraviolet band. The nonlinear optical crystal is without doubt one of the disorders for frequency transformation, so The expansion, size, damage resistance, conversion performance and allowable parameter number of nonlinear optical crystal are demanded more and more.
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Both of those the 1040 nm and 1078 nm laser originate from 1 twin-wavelength Yb-doped fiber laser. Each individual laser is amplified by phases of fiber amplifier and Yb-doped components amplifier, respectively.
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Inside the scientific and industrial programs, the beam high-quality with the DUV laser is likewise a significant parameter. Specially, the beam good quality in the DUV laser significantly has an effect on the laser machining success. The beam excellent 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 large-ability DUV laser (>10 W) at 258 nm was claimed using a beam good quality of M2 < one.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 check here better laser machining end result as compared to the earlier DUV lasers with much larger M2.
The pulse period of the next Stokes light-weight was shortened to 5 ns as revealed in Figure 7a, only one-shot image from the oscilloscope, which is a standard phenomenon in Raman laser [44] even though the pulse length with the pump laser was 10 ns.
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 enhance the damage threshold, lower CLBO surface area roughness, by extremely-precision machining, is necessary. Because the CLBO crystal has easy hydroscopic response and micro scratches in machining, ultra-exact machining on the CLBO crystal is often a challenging technical challenge.
The beam profile shown in Figure 7b demonstrated an excellent beam excellent as one of the deserves of Raman laser, which might be beneficial to produce a 193-nm DUV laser with a high quality beam.
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