The smart Trick of CLBO Crystal That Nobody is Discussing
The smart Trick of CLBO Crystal That Nobody is Discussing
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With this paper, the new lapping slurry and polishing slurry are launched. Plus the deliquescence diploma of CLBO is fallen to least expensive. A brand new Doing work technological innovation is usually adopted. Following rough sharpening, the focus of ultra-precision sharpening slurry is elevated effectively. So does the ultra-precision sprucing speed, and also the wiping velocity is quicker when compared to the deliquescence pace. The CLBO crystal floor roughness can obtain 1nm and hold the surface area good quality perfectly. Entry by means of your institution
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We summarized The existing improvement position on the large-power DUV laser both equally on the wavelength of FHG of your 1-μm laser and at 193 nm. The new improvement with the strong-point out/fiber laser, together with the nonlinear optical crystals, prompts not just the normal power but in addition the beam high-quality (coherence) with the DUV lasers to an unparalleled level.
The normal energy from the NIR laser still has the opportunity to get improved to tens of watts for example 70 W [26] In the event the double-go configuration could be used for your Yb:YAG SCF amplifier phase. Consequently, if the conversion effectiveness of 31% from NIR to DUV could be even now managed at this bigger electrical power ailment, the typical output power in the DUV laser at 258 nm may very well be more than 20 W, which would become a extraordinary power stage for that DUV laser and bring about the unanticipated DUV laser machining benefits. Also, for top-electric power DUV laser, the UV destruction of the nonlinear crystal, such as the Home windows for CLBO crystal plus the mirrors, is an additional vital parameter for long-lasting and steady Procedure.
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LBO can be a wonderful nonlinear crystal which is always applied to the SHG within the NIR to the eco-friendly. The DUV laser is frequently understood by two levels of SFG within the LBO crystals considering that there is not any section-matching angle for LBO to transform the environmentally friendly laser at 515 nm or 532 nm into the DUV right by SHG [sixteen]. Just lately, the NSBBF crystal has also revealed its opportunity to acquire a significant conversion effectiveness from 532 nm to 266 nm. The walk-off angle and deff of the NSBBF are almost comparable to All those of CLBO [17].
On the opposite aspect, the power scaling of your NIR laser is yet another facet to boost the average ability on the 193-nm DUV laser. As a result of not enough the substantial-energy amplification Option in the NIR laser (as an example at 1553 nm), nonlinear frequency procedures for example optical parameter oscillation (OPO) might be applied to establish a wavelength converter by shifting the wavelength from 1 μm to the desired wavelength and obtaining relative larger ability [21]. Lately, a diamond Raman laser showed its skill in achieving a higher ability as well as a superior conversion performance at the 1st Stokes from the 1-μm laser [22,23], which implies the possibility to be used in the 193-nm DUV laser technology because of its high Raman attain and enormous frequency change.
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In addition, combining the good-state laser with other read more nonlinear course of action like stimulated Raman scattering, NIR lasers might be obtained at new wavelengths with higher electricity and superior beam high quality, which was tested through the proof-of-theory experiment. This Raman laser scheme supplies a different path to the high-electrical power DUV laser, Primarily in the wavelength of 193 nm.
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Its UV absorption edge reaches one hundred eighty nm. The powerful nonlinear optical coefficient of CLBO for frequency doubling at 1064nm is about two times as substantial as that of KDP. CLBO crystals could be developed through the stoichiometric melt with reduce viscosity.
The event from the 193-nm laser was demonstrated by phases of SFG. As a way to scale the DUV laser electrical power successfully, a brand new strategy on the 193-nm DUV laser technology is offered depending on the diamond Raman laser.