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We summarized The present growth status with the higher-power DUV laser both equally on the wavelength of FHG on the one-μm laser and at 193 nm. The modern improvement with the strong-condition/fiber laser, along with the nonlinear optical crystals, prompts not simply the common power but also the beam high quality (coherence) of the DUV lasers to an unprecedented amount.

The important thing challenge of ultraviolet coherent light source largely focuses on the development of nonlinear optical frequency conversion crystal in ultraviolet band. The nonlinear optical crystal has become the ailments for frequency transformation, so The expansion, dimension, injury resistance, conversion efficiency and allowable parameter selection of nonlinear optical crystal are needed A growing number of.

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LBO can be a great nonlinear crystal which is usually placed on the SHG from your NIR into the eco-friendly. The DUV laser is generally understood by two levels of SFG inside the LBO crystals considering the fact that there is absolutely no stage-matching angle for LBO to convert the eco-friendly laser at 515 nm or 532 nm on the DUV specifically by SHG [sixteen]. Not long ago, the NSBBF crystal has also demonstrated its probable to get a significant conversion effectiveness from 532 nm to 266 nm. The stroll-off angle and deff in the NSBBF are Virtually much like those of CLBO [seventeen].

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Cesium Lithium Borate (CsLiB6O10 or CLBO) is the most effective non-linear crystal which generates ultraviolet harmonics from the Nd:YAG essential laser wavelength. So that you can enrich the injury threshold, reduced CLBO floor roughness, by ultra-precision machining, is necessary. Since the CLBO crystal has simple hydroscopic response and micro scratches in machining, ultra-specific machining on the CLBO crystal is really a complicated complex problem.

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Its UV absorption edge reaches one hundred eighty nm. The efficient nonlinear optical coefficient of CLBO for frequency doubling at 1064nm is about 2 times as massive as that of KDP. CLBO crystals could be developed through the stoichiometric melt with decrease viscosity.

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