The 2-Minute Rule for CLBO Crystal
The 2-Minute Rule for CLBO Crystal
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For illustration, The present concave OC could be replaced by a airplane mirror which could mitigate the power density over the floor of M1 along with the diamond. Additionally, utilizing higher destruction threshold coatings for M1 and diamond would also Enhance the output energy with no damages. Then, the NIR laser in the 2nd Stokes wavelength can be substantial enough, in addition to its superior beam top quality, to make the final DUV laser at 193 nm by using a superior typical electric power.
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Both of those the 1040 nm and 1078 nm laser originate from one particular dual-wavelength Yb-doped fiber laser. Every laser is amplified by stages of fiber amplifier and Yb-doped products amplifier, respectively.
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During the scientific and industrial purposes, the beam high-quality of your DUV laser can also be a crucial parameter. Specifically, the beam high quality of the DUV laser dramatically has an effect on the laser machining benefits. The beam high-quality with the DUV laser is determined by that of the elemental laser along with the crystal for your frequency conversion. Lately, a superior-electricity DUV laser (>ten W) at 258 nm was documented which has a beam excellent of M2 < 1.5, which was produced by FHG of a Yb:YAG laser at 1030 nm utilizing the CLBO crystal [thirteen]. This laser would result in a far better laser machining outcome as compared to the prior DUV lasers with much larger M2.
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Tunable ultraviolet laser supply dependant on good-point out dye laser technology and CsLiB6O10 harmonic generation
The conversion effectiveness from essential NIR to DUV is from 5% to 36% in accordance with the described results in Desk 1. Raising the conversion efficiency will decrease the burden on the design and set up of the fundamental laser amplifier and also the electric electrical power usage. A very good beam top quality of the elemental laser will also lead to the escalating with the conversion performance in addition to the suitable electricity depth of your NIR and green laser from the SHG and FHG system, respectively. The best conversion efficiencies from NIR to green and environmentally friendly to DUV laser by usage of CLBO crystal are 70% and all-around fifty%, respectively [twelve], which corresponds on the conversion effectiveness of 35% from basic to DUV.
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