The 2-Minute Rule for CLBO Crystal
The 2-Minute Rule for CLBO Crystal
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All-solid-state ultraviolet lasers happen to be extensively used in the fields of mechanical flaw detection, lithography, micromachining and medicine for the advantages of little volume, lengthy existence, large performance, superior beam quality, wide tuning and slim spectral line, and so on. Using large electricity close to-infrared coherent light-weight source as the elemental frequency source based on nonlinear tuning technological innovation, building ultraviolet coherent radiation by multistage frequency conversion is viewed as a vital strategy to produce the ultraviolet coherent light source.
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In accordance with the evidence-of-principle experiment, the conversion effectiveness of 23% implied the possibility of obtaining higher-electric power at the 2nd Stokes wavelength with the Raman laser. Should the pump laser of 1078 nm could be obtained at the common electric power of fifty W, the output ability of its 2nd Stokes wavelength at 1512 nm may be over 10 W. The look in the Raman laser cavity must be optimized to be able to stay away from the harm of your M1 and diamond surface.
The typical electrical power from the NIR laser nevertheless has the potential to generally be improved to tens of watts such as 70 W [26] Should the double-go configuration might be used for that Yb:YAG SCF amplifier stage. As a result, Should the conversion efficiency of 31% from NIR to DUV may be nevertheless maintained at this increased energy issue, the common output electrical power with the DUV laser at 258 nm could possibly be a lot more than 20 W, which would certainly be a remarkable ability amount for that DUV laser and result in the unanticipated DUV laser machining benefits. Moreover, for high-ability DUV laser, the UV damage in the nonlinear crystal, including the windows for CLBO crystal and also the mirrors, is yet another critical parameter for long-term and steady operation.
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From the scientific and industrial purposes, the beam quality of the DUV laser is also an important parameter. Particularly, the beam high-quality on the DUV laser drastically affects the laser machining success. The beam good quality from the DUV laser is determined by that of the elemental laser as well as the crystal for the frequency conversion. Lately, a high-electricity DUV laser (>ten W) at 258 nm was documented which has a beam top 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 a greater laser machining consequence as compared to the prior DUV lasers with more substantial M2.
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In addition, combining the good-state laser with other nonlinear method which include stimulated Raman scattering, NIR lasers might be reached at new wavelengths with superior energy and large beam good quality, which was analyzed because of the evidence-of-theory experiment. This Raman laser plan presents a brand new route to the high-energy DUV laser, Particularly on the wavelength of 193 nm.
The beam profile proven in Figure 7b demonstrated a superb beam excellent as one of the deserves of Raman laser, which might be effective to deliver a 193-nm DUV laser with a top quality beam.
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