CLBO Crystal Fundamentals Explained
CLBO Crystal Fundamentals Explained
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On this paper, The brand new lapping slurry and sprucing slurry are released. And the deliquescence degree of CLBO is fallen to cheapest. A fresh Functioning technological know-how is usually adopted. Right after rough polishing, the concentration of extremely-precision sprucing slurry is increased effectively. So does the extremely-precision sharpening speed, as well as the wiping speed is quicker when compared to the deliquescence velocity. The CLBO crystal floor roughness can obtain 1nm and continue to keep the area quality nicely. Access through your establishment
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We summarized The existing growth status of the high-ability DUV laser both equally with the wavelength of FHG in the 1-μm laser and at 193 nm. The new growth from the stable-state/fiber laser, together with the nonlinear optical crystals, prompts not just the normal energy and also the beam quality (coherence) in the DUV lasers to an unprecedented degree.
The standard ability with the NIR laser even now has the prospective to be enhanced to tens of watts including 70 W [26] if the double-move configuration might be utilized for the Yb:YAG SCF amplifier phase. That's why, In the event the conversion efficiency of 31% from NIR to DUV may very well be nevertheless maintained at this increased electrical power issue, the standard output electrical power on the DUV laser at 258 nm could be over twenty W, which might certainly be a remarkable energy degree to the DUV laser and cause the unanticipated DUV laser machining effects. In addition, for prime-electric power DUV laser, the UV damage from the nonlinear crystal, including the windows for CLBO crystal and also the mirrors, is another critical parameter for lasting and steady Procedure.
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LBO can also be a fantastic nonlinear crystal which is often applied to the SHG from your NIR into the green. The DUV laser is normally recognized by two levels of SFG within the LBO crystals due to the fact there's no period-matching angle for LBO to transform the environmentally friendly laser at 515 nm or 532 nm on the DUV instantly by SHG [sixteen]. Lately, the NSBBF crystal has also proven its prospective to get a substantial conversion efficiency from 532 nm to 266 nm. The wander-off angle and deff of the NSBBF are Pretty much comparable to People of CLBO [17].
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What's more, combining the strong-condition laser with other nonlinear procedure which include stimulated Raman scattering, NIR lasers could possibly be obtained at new wavelengths with large ability and higher beam quality, which was tested with the evidence-of-basic principle experiment. This Raman laser plan supplies a completely new path to the high-power DUV laser, Particularly on 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 noted brings about Table one. Expanding the conversion effectiveness will reduce the load on the look and setup of the elemental laser amplifier plus the electric powered electricity consumption. A superb beam top quality of the elemental laser will also contribute on the expanding of the conversion efficiency along with the suitable electric power depth of your NIR and environmentally friendly laser within the SHG and FHG procedure, respectively. The highest conversion efficiencies from NIR to green and green to DUV laser by utilization of CLBO crystal are 70% and all over fifty%, respectively [12], which corresponds towards the conversion efficiency of 35% from essential to DUV.
The development with the 193-nm laser was demonstrated by phases of SFG. To be able to scale the DUV laser ability efficiently, a new notion of your 193-nm DUV laser generation is offered based on the diamond Raman laser.