CLBO Crystal - An Overview

CLBO Crystal - An Overview

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We summarized The present advancement status with the large-energy DUV laser both for the wavelength of FHG from the one-μm laser and at 193 nm. The current progress of the stable-state/fiber laser, together with the nonlinear optical crystals, prompts not just the standard electrical power and also the beam high quality (coherence) on the DUV lasers to an unparalleled amount.

The crucial element dilemma of ultraviolet coherent mild supply largely focuses on the development of nonlinear optical frequency conversion crystal in ultraviolet band. The nonlinear optical crystal is without doubt one of the situations for frequency transformation, so the growth, dimension, injury resistance, conversion efficiency and allowable parameter selection of nonlinear optical crystal are expected Progressively more.

Then again, the beam quality of this bigger electrical power DUV laser would come to be worse as a consequence of a lot more major thermal and nonlinear effects. Hence, the frequency conversion processes needs to be thoroughly designed to mitigate the aforementioned results. Hence, a substantial-ability DUV laser at the FHG of one μm with a great beam top quality could possibly be acquired and can be useful for acquiring the shorter wavelength DUV lasers including 193 nm by SFG.

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While in the scientific and industrial programs, the beam top quality in the DUV laser is additionally a crucial parameter. Specifically, the beam high quality from the DUV laser dramatically has an effect on the laser machining outcomes. The beam high-quality with the DUV laser is determined by that of the elemental laser as well as the crystal for your frequency conversion. Not long ago, a large-power DUV laser (>10 W) at 258 nm was claimed using a beam high-quality of M2 < 1.5, which was produced by FHG of the Yb:YAG laser at 1030 nm using the CLBO crystal [13]. This laser would produce a much better laser machining result when compared to the previous DUV lasers with bigger M2.

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The beam profile proven in Figure 7b demonstrated a fantastic beam quality as one of many merits of Raman laser, which would be advantageous to generate a 193-nm DUV laser with a high quality beam.

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