The Ultimate Guide To CLBO Crystal
The Ultimate Guide To CLBO Crystal
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All-good-point out ultraviolet lasers have been broadly Utilized in the fields of mechanical flaw detection, lithography, micromachining and drugs for the advantages of small volume, prolonged everyday living, significant effectiveness, great beam excellent, broad tuning and narrow spectral line, etcetera. Making use of higher electric power around-infrared coherent light supply as the basic frequency supply depending on nonlinear tuning engineering, generating ultraviolet coherent radiation by multistage frequency conversion is regarded as an essential technique to acquire the ultraviolet coherent mild source.
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We summarized The present improvement status of the higher-energy DUV laser both equally for the wavelength of FHG from the 1-μm laser and at 193 nm. The recent enhancement with the solid-point out/fiber laser, together with the nonlinear optical crystals, prompts not only the average electricity but in addition the beam high-quality (coherence) with the DUV lasers to an unprecedented amount.
For instance, The present concave OC could get replaced by a plane mirror which could mitigate the power density to the area of M1 as well as diamond. Also, applying high harm threshold coatings for M1 and diamond would also Enhance the output energy with no damages. Then, the NIR laser on the 2nd Stokes wavelength could be higher plenty of, and its superior beam good quality, to deliver the final DUV laser at 193 nm that has a high common electricity.
Conversely, the beam top quality of this greater electric power DUV laser would develop into even worse resulting from a lot more severe thermal and nonlinear outcomes. Hence, the frequency conversion procedures must be very carefully intended to mitigate the aforementioned results. Consequently, a substantial-power DUV laser within the FHG of 1 μm with an excellent beam quality may be received and may be effective for acquiring the shorter wavelength DUV lasers which include 193 nm by SFG.
Both equally the 1040 nm and 1078 nm laser come from 1 dual-wavelength Yb-doped fiber laser. Every single laser is amplified by phases of fiber amplifier and Yb-doped components amplifier, respectively.
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During the scientific and industrial applications, the beam excellent of your DUV laser is likewise an important parameter. Particularly, the beam top quality with the DUV laser dramatically impacts the laser machining success. The beam high quality with the DUV laser is determined by that of the fundamental laser plus the crystal with the frequency conversion. Not too long ago, a superior-ability DUV laser (>ten W) at 258 nm was noted which has a beam top quality of M2 < 1.five, which was produced by FHG of the Yb:YAG laser at 1030 nm utilizing the CLBO crystal [13]. This laser would lead to a much better laser machining result in comparison to the previous DUV lasers with larger M2.
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Tunable ultraviolet laser source based on good-condition dye laser technologies and CsLiB6O10 harmonic era
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