CLBO Crystal Fundamentals Explained
CLBO Crystal Fundamentals Explained
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We summarized The existing growth status on the superior-ability DUV laser both within the wavelength of FHG in the one-μm laser and at 193 nm. The current enhancement in the good-state/fiber laser, plus the nonlinear optical crystals, prompts not simply the average ability and also the beam high quality (coherence) on the DUV lasers to an unprecedented degree.
The main element challenge of ultraviolet coherent light-weight resource largely concentrates on the event of nonlinear optical frequency conversion crystal in ultraviolet band. The nonlinear optical crystal is amongst the circumstances for frequency transformation, so the growth, size, harm resistance, conversion efficiency and allowable parameter range of nonlinear optical crystal are necessary more and more.
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On another side, the facility scaling with the NIR laser is an additional facet to boost the average ability with the 193-nm DUV laser. A result of the insufficient the high-electric power amplification solution with the NIR laser (by way of example at 1553 nm), nonlinear frequency processes for example optical parameter oscillation (OPO) might be placed on build a wavelength converter by shifting the wavelength from 1 μm to the specified wavelength as well as acquiring relative better energy [21]. Just lately, a diamond Raman laser confirmed its ability in acquiring a higher electric power and a higher conversion efficiency on the 1st Stokes on the one-μm laser [22,23], which suggests the likelihood to get utilized while in the 193-nm DUV laser era on account of its substantial Raman achieve and enormous frequency change.
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Tunable ultraviolet laser supply determined by stable-point out dye laser technological know-how and CsLiB6O10 harmonic technology
The conversion efficiency from essential NIR to DUV is from 5% to 36% in accordance with the noted brings about Table 1. Increasing the conversion performance will decrease the stress on the design and setup of the elemental laser amplifier along with the electrical power usage. A fantastic beam high quality of the basic laser can even add towards the rising with the conversion performance as well as the appropriate electrical power intensity with the NIR and environmentally friendly laser in the SHG and FHG procedure, respectively. The highest conversion efficiencies from NIR to green and green to DUV laser by usage of CLBO crystal are 70% and about 50%, respectively [twelve], which corresponds to your conversion effectiveness of 35% from basic to DUV.
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