The Definitive Guide to CLBO Crystal

The Definitive Guide to CLBO Crystal

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All-strong-point out ultraviolet lasers have been widely used in the fields of mechanical flaw detection, lithography, micromachining and drugs for some great benefits of smaller quantity, prolonged daily life, substantial performance, very good beam good quality, extensive tuning and narrow spectral line, etcetera. Making use of large energy around-infrared coherent mild resource as the elemental frequency supply according to nonlinear tuning technologies, building ultraviolet coherent radiation by multistage frequency conversion is considered an important strategy to create the ultraviolet coherent light supply.

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We summarized The existing progress standing of the superior-electricity DUV laser each with the wavelength of FHG from the one-μm laser and at 193 nm. The recent progress in the reliable-state/fiber laser, together with the nonlinear optical crystals, prompts not just the normal energy and also the beam high-quality (coherence) in the DUV lasers to an unparalleled stage.

For example, The existing concave OC could get replaced by a aircraft mirror which could mitigate the power density over the floor of M1 as well as the diamond. Furthermore, using significant injury threshold coatings for M1 and diamond would also Increase the output electric power without any damages. Then, the NIR laser within the 2nd Stokes wavelength may be large enough, together with its great beam excellent, to generate the final DUV laser at 193 nm that has a higher regular electric power.

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Within the scientific and industrial purposes, the beam excellent on the DUV laser can also be a very important parameter. Especially, the beam high quality of your DUV laser considerably impacts the laser machining outcomes. The beam high-quality on the DUV laser is determined by that of the basic laser as well as crystal to the frequency conversion. Recently, a substantial-electric power DUV laser (>10 W) at 258 nm was described having a beam good quality of M2 < one.five, which was created by FHG of the Yb:YAG laser at 1030 nm using the CLBO crystal [13]. This laser would bring about a far better laser machining outcome compared to the prior DUV lasers with greater M2.

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The beam profile proven in Figure 7b shown a good beam good quality as on the list of merits of Raman laser, which would be helpful to make a 193-nm DUV laser with a top quality beam.

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