Examine This Report on CLBO Crystal
Examine This Report on CLBO Crystal
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Within this paper, the new lapping slurry and polishing slurry are launched. Plus the deliquescence diploma of CLBO is fallen to most affordable. A completely new Performing technological know-how is likewise adopted. Right after tough sharpening, the concentration of ultra-precision sharpening slurry is increased properly. So does the extremely-precision sharpening velocity, and also the wiping speed is quicker when compared to the deliquescence velocity. The CLBO crystal floor roughness can attain 1nm and preserve the surface high quality well. Obtain by way of your institution
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The average power of the NIR laser however has the opportunity being improved to tens of watts such as 70 W [26] If your double-move configuration might be used for your Yb:YAG SCF amplifier phase. Consequently, if the conversion efficiency of 31% from NIR to DUV may very well be however taken care of at this larger ability problem, the standard output energy with the DUV laser at 258 nm could be over twenty W, which would become a amazing electrical power level to the DUV laser and produce the unanticipated DUV laser machining final results. Furthermore, for prime-energy DUV laser, the UV damage of your nonlinear crystal, such as the windows for CLBO crystal as well as the mirrors, is yet another critical parameter for long run and steady operation.
On the other hand, the beam good quality of this increased power DUV laser would turn into even worse because of additional serious thermal and nonlinear results. For this reason, the frequency conversion procedures ought to be meticulously meant to mitigate the aforementioned effects. Therefore, a higher-electricity DUV laser for the FHG of one μm with a fantastic beam high-quality can be attained and will be helpful for obtaining the shorter wavelength DUV lasers such as 193 nm by SFG.
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Within the scientific and industrial applications, the beam quality of the DUV laser is also an essential parameter. Particularly, the beam high quality from the DUV laser significantly has an effect on the laser machining effects. The beam top quality of the DUV laser is set by that of the fundamental laser plus the crystal to the frequency conversion. Recently, a significant-electrical power DUV laser (>ten W) at 258 nm was reported by using a beam quality of M2 < one.five, which was generated by FHG of the Yb:YAG laser at 1030 nm utilizing the CLBO crystal [13]. This laser would cause a better laser machining end result compared to the earlier DUV lasers with much larger M2.
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Moreover, combining the stable-point out laser with other nonlinear method such as stimulated Raman scattering, NIR lasers could be obtained at new wavelengths with substantial power and large beam excellent, which was analyzed by the proof-of-principle experiment. This Raman laser scheme gives a whole new path to the substantial-electric power DUV laser, Primarily at the wavelength of 193 nm.
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The conversion performance from basic NIR to DUV is from five% to 36% based on the claimed leads to Desk 1. Raising the conversion efficiency will decrease the burden on the design and set up of the fundamental laser amplifier plus the electric electrical power use. A great beam high quality of the basic laser will also contribute on the rising with the conversion performance as well as the appropriate electrical power intensity in the NIR and inexperienced laser from the SHG and FHG system, respectively. The best conversion efficiencies from NIR to inexperienced and inexperienced to DUV laser by utilization of CLBO crystal are 70% and all around 50%, respectively [12], which corresponds to the conversion performance of 35% from elementary to DUV.
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