Nonetheless, so that you can system the crystal is extremely advanced producing strategies are required. Considering that the dawn of this crystal, working on this obstacle, we are now the only real organization in the world which can be processed in this crystal.
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Based on the evidence-of-basic principle experiment, the conversion effectiveness of 23% implied the potential for obtaining substantial-electrical power at the second Stokes wavelength of your Raman laser. If your pump laser of 1078 nm may very well be acquired at the average power of fifty W, the output ability of its 2nd Stokes wavelength at 1512 nm can be more than ten W. The look in the Raman laser cavity needs to be optimized as a way to avoid the destruction with the M1 and diamond surface.
The real key challenge of ultraviolet coherent gentle source generally focuses on the development of nonlinear optical frequency conversion crystal in ultraviolet band. The nonlinear optical crystal has become the disorders for frequency transformation, so The expansion, sizing, problems resistance, conversion performance and allowable parameter choice of nonlinear optical crystal are demanded A lot more.
On the other hand, the beam top quality of this increased electric power DUV laser would come to be even worse due to much more severe thermal and nonlinear consequences. As a result, the frequency conversion procedures should be carefully meant to mitigate the aforementioned consequences. Consequently, a substantial-electrical power DUV laser on the FHG of one μm with a very good beam high-quality may very well be obtained and can be helpful for getting the shorter wavelength DUV lasers for example 193 nm by SFG.
The two the 1040 nm and 1078 nm laser originate from a single twin-wavelength Yb-doped fiber laser. Each and every laser is amplified by levels of fiber amplifier and Yb-doped resources amplifier, respectively.
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During the scientific and industrial apps, the beam good quality in the DUV laser is also a very important parameter. Specially, the beam good quality from the DUV laser radically impacts the laser machining results. The beam good quality in the DUV laser is decided by that of the basic laser and the crystal to the frequency conversion. Recently, a substantial-ability DUV laser (>10 W) at 258 nm was documented that has a beam quality of M2 check here < 1.5, which was generated by FHG of the Yb:YAG laser at 1030 nm utilizing the CLBO crystal [thirteen]. This laser would lead to a greater laser machining end result as compared to the earlier DUV lasers with more substantial M2.
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The beam profile shown in Determine 7b demonstrated a great beam quality as one of several deserves of Raman laser, which would be advantageous to make a 193-nm DUV laser with a high quality beam.
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