A Review Of CLBO Crystal
A Review Of CLBO Crystal
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Nevertheless, to be able to procedure the crystal is very advanced producing tactics are needed. Because the dawn of the crystal, working on this problem, we at the moment are the only corporation on earth which might be processed In this particular crystal.
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We summarized the current improvement position on the substantial-energy DUV laser both for the wavelength of FHG from the 1-μm laser and at 193 nm. The the latest improvement with the strong-condition/fiber laser, along with the nonlinear optical crystals, prompts not simply the average electrical power but will also the beam excellent (coherence) from the DUV lasers to an unparalleled amount.
For instance, the current concave OC could be replaced by a airplane mirror which could mitigate the ability density over the floor of M1 as well as the diamond. Furthermore, applying higher injury threshold coatings for M1 and diamond would also improve the output electric power without any damages. Then, the NIR laser within the 2nd Stokes wavelength could be substantial adequate, in addition to its superior beam good quality, to generate the final DUV laser at 193 nm with a substantial typical electric power.
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On the opposite aspect, the facility scaling with the NIR laser is an additional factor to improve the normal ability of your 193-nm DUV laser. Mainly because of the deficiency of the substantial-electrical power amplification solution of your NIR laser (one example is at 1553 nm), nonlinear frequency processes for instance optical parameter oscillation (OPO) could possibly be applied to produce a wavelength converter by shifting the wavelength from 1 μm to the desired wavelength and getting relative larger ability [21]. Not too long ago, a diamond Raman laser confirmed its means in reaching a substantial ability along with a large conversion effectiveness with the 1st Stokes with the one-μm laser [22,23], which implies the chance being used in the 193-nm DUV laser generation as a result of its substantial website Raman get and enormous frequency change.
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Inside the scientific and industrial apps, the beam excellent of your DUV laser is likewise a very important parameter. Significantly, the beam quality of your DUV laser radically influences the laser machining effects. The beam good quality in the DUV laser is decided by that of the basic laser and also the crystal with the frequency conversion. Not long ago, a large-power DUV laser (>ten W) at 258 nm was reported that has a beam high quality of M2 < one.five, which was created by FHG of a Yb:YAG laser at 1030 nm utilizing the CLBO crystal [thirteen]. This laser would cause a much better laser machining final result when compared to the prior DUV lasers with much larger M2.
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