The Basic Principles Of CLBO Crystal
The Basic Principles Of CLBO Crystal
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In this paper, the new lapping slurry and sharpening slurry are introduced. Along with the deliquescence degree of CLBO is fallen to most affordable. A different working engineering is additionally adopted. Soon after tough sprucing, the concentration of ultra-precision sprucing slurry is increased properly. So does the ultra-precision polishing velocity, as well as wiping velocity is quicker in comparison to the deliquescence velocity. The CLBO crystal floor roughness can obtain 1nm and hold the surface quality well. Obtain by your institution
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The crucial element issue of ultraviolet coherent mild supply predominantly concentrates on the event of nonlinear optical frequency conversion crystal in ultraviolet band. The nonlinear optical crystal is among the situations for frequency transformation, so The expansion, measurement, hurt resistance, conversion efficiency and allowable parameter selection of nonlinear optical crystal are needed more and more.
However, the beam quality of this higher electric power DUV laser would grow to be even worse as a result of much more really serious thermal and nonlinear results. Consequently, the frequency conversion procedures need to be cautiously created to mitigate the aforementioned outcomes. Consequently, a superior-power DUV laser in the FHG of 1 μm with a superb beam high quality could possibly be acquired and will be effective for getting the shorter wavelength DUV lasers which include 193 nm by SFG.
Both the 1040 nm and 1078 nm laser originate from one twin-wavelength Yb-doped fiber laser. Each individual laser is amplified by levels of fiber amplifier and Yb-doped elements amplifier, respectively.
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From the scientific and industrial apps, the beam good quality on the DUV laser is usually an important parameter. Significantly, the beam high-quality of your DUV laser radically influences the laser machining final results. The beam high quality of your DUV laser is decided by that of the basic laser as well as the crystal for the frequency conversion. Lately, a superior-electric power DUV laser (>10 W) at 258 nm was described using a beam high-quality of M2 < 1.5, which was created by FHG of a Yb:YAG laser at 1030 nm utilizing the CLBO crystal [thirteen]. This laser would lead to an even better laser machining result when compared with the previous DUV lasers with greater M2.
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Moreover, combining the reliable-point out laser with other nonlinear procedure for instance stimulated Raman scattering, NIR lasers could be attained at new wavelengths with significant power and higher beam good quality, which was analyzed by the proof-of-principle experiment. This Raman laser scheme presents a new route to the substantial-ability DUV laser, especially in the wavelength of 193 nm.
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The conversion performance from basic NIR to DUV is from 5% to 36% in accordance with the documented brings about Table one. Escalating the conversion performance will reduce the load on the look and setup of the basic laser amplifier along with the electrical power usage. A very good beam top quality of the basic laser will also contribute to the escalating with the conversion performance in addition to the appropriate electricity depth with the NIR and environmentally friendly laser inside the SHG and FHG approach, respectively. The best conversion efficiencies from NIR to green and green to DUV laser by use of CLBO crystal are 70% and about 50%, respectively [12], which corresponds to the conversion performance of 35% from essential to DUV.
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