With this paper, The brand new lapping slurry and polishing slurry are launched. Plus the deliquescence diploma of CLBO is fallen to least expensive. A different working technology is additionally adopted. Soon after tough sprucing, the focus of extremely-precision sharpening slurry is enhanced thoroughly. So does the extremely-precision sharpening velocity, and the wiping velocity is quicker when compared to the deliquescence velocity. The CLBO crystal floor roughness can reach 1nm and maintain the surface high-quality nicely. Entry by way of your institution
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The real key problem of ultraviolet coherent light-weight source largely focuses on the event of nonlinear optical frequency conversion crystal in ultraviolet band. The nonlinear optical crystal is among the ailments for frequency transformation, so the growth, size, problems resistance, conversion effectiveness and allowable parameter choice of nonlinear optical crystal are required An increasing number of.
Then again, the beam high quality of this bigger ability DUV laser would grow to be even worse due to additional severe thermal and nonlinear effects. Hence, the frequency conversion processes should be carefully designed to mitigate the aforementioned results. As a result, a substantial-energy DUV laser within the FHG of one μm with a great beam quality can be attained and can be effective for acquiring click here the shorter wavelength DUV lasers which include 193 nm by SFG.
Mainly because of the thermal lens outcome during the reliable-state lasers, if the heating administration is insufficient, It's not straightforward to acquire the reliable-point out laser by using a higher electric power as well as a high beam good quality at the same time. Not too long ago, with the event of The skinny disk laser and single-crystal fiber (SCF) laser, a substantial-power laser at the fundamental wavelength (1 μm) had been understood with a good beam high quality Despite a TEM00 method beam [4,24], which would be great candidates for the basic in the DUV laser era. A different candidate for the elemental is the high-energy fiber laser which might be accomplished by coherent beam combination with M2 benefit fewer than one.
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In the scientific and industrial purposes, the beam quality of the DUV laser is also an important parameter. Significantly, the beam excellent on the DUV laser substantially has an effect on the laser machining benefits. The beam top quality of the DUV laser is set by that of the fundamental laser plus the crystal for your frequency conversion. Just lately, a higher-electrical power DUV laser (>ten W) at 258 nm was noted that has a beam high quality of M2 < one.five, which was generated by FHG of a Yb:YAG laser at 1030 nm using the CLBO crystal [13]. This laser would produce a greater laser machining consequence in comparison to the preceding DUV lasers with larger M2.
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Also, combining the strong-point out laser with other nonlinear process for example stimulated Raman scattering, NIR lasers could be attained at new wavelengths with significant power and large beam good quality, which was examined via the evidence-of-basic principle experiment. This Raman laser scheme delivers a completely new path to the high-electrical power DUV laser, Specially with the wavelength of 193 nm.
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