Having said that, so as to method the crystal is incredibly Superior producing methods are essential. Because the dawn of this crystal, working on this problem, we are now the only real corporation on this planet that may be processed In this particular crystal.
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We summarized the current advancement standing in the high-ability DUV laser equally at the wavelength of FHG with the 1-μm laser and at 193 nm. The modern enhancement in the reliable-point out/fiber laser, together with the nonlinear optical crystals, prompts not only the normal power but in addition the beam high-quality (coherence) from the DUV lasers to an unprecedented degree.
The main element dilemma of ultraviolet coherent light-weight resource mainly concentrates on the event of nonlinear optical frequency conversion crystal in ultraviolet band. The nonlinear optical crystal is one of the circumstances for frequency transformation, so the growth, size, damage resistance, conversion performance and allowable parameter array of nonlinear optical crystal are necessary Progressively more.
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In the scientific and industrial purposes, the beam excellent in the DUV laser can also be an important parameter. Significantly, the beam good quality from the DUV laser radically impacts the laser machining success. The beam quality of your DUV laser is determined by that of the elemental laser along with the crystal with the frequency conversion. Not too long ago, a superior-energy DUV laser (>10 W) at 258 nm was described which has a beam high quality 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 previous DUV lasers with bigger M2.
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Tunable ultraviolet laser source according to strong-point out dye laser technology and CsLiB6O10 harmonic technology
The conversion efficiency from basic NIR to DUV is from five% to 36% according to the noted brings about Table 1. Expanding the conversion efficiency will decrease the load on the look and set up of the fundamental laser amplifier as well as the electric powered energy usage. A fantastic beam quality of the fundamental laser will even lead to your expanding of the conversion efficiency in addition to the appropriate energy intensity from the NIR and green laser within the SHG and FHG procedure, respectively. The highest conversion efficiencies from NIR to eco-friendly and eco-friendly to DUV laser by usage of CLBO crystal are 70% and all-around fifty%, respectively [12], which corresponds to the conversion performance of 35% from elementary to DUV.
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