In this paper, the new lapping slurry and sharpening slurry are launched. And also the deliquescence diploma of CLBO is fallen to cheapest. A different Doing work technological know-how is usually adopted. After tough sharpening, the focus of ultra-precision polishing slurry is greater appropriately. So does the ultra-precision sharpening speed, along with the wiping speed is faster as opposed to deliquescence pace. The CLBO crystal surface roughness can realize 1nm and hold the surface excellent effectively. Obtain by means of your institution
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In accordance with the evidence-of-principle experiment, the conversion efficiency of 23% implied the potential of obtaining substantial-electric power at the next Stokes wavelength on the Raman laser. In the event the pump laser of 1078 nm could possibly be received at the common power of fifty W, the output power of its 2nd Stokes wavelength at 1512 nm can be a lot more than 10 W. The design of your Raman laser cavity ought to be optimized so that you can steer clear of the injury of your M1 and diamond floor.
The common electrical power from the NIR laser nevertheless has the likely to become improved to tens of watts like 70 W [26] When the double-move configuration may be utilized for that Yb:YAG SCF amplifier phase. Consequently, Should the conversion efficiency of 31% from NIR to DUV could possibly be nevertheless managed at this greater electricity issue, the normal output energy from the more info DUV laser at 258 nm could possibly be over 20 W, which might certainly be a exceptional electric power degree for your DUV laser and lead to the unanticipated DUV laser machining success. Furthermore, for high-power DUV laser, the UV damage of your nonlinear crystal, such as the windows for CLBO crystal plus the mirrors, is an additional critical parameter for long lasting and secure operation.
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LBO can be an outstanding nonlinear crystal which is often placed on the SHG within the NIR into the environmentally friendly. The DUV laser is usually understood by two phases of SFG inside the LBO crystals due to the fact there is not any section-matching angle for LBO to transform the environmentally friendly laser at 515 nm or 532 nm to your DUV specifically by SHG [sixteen]. Just lately, the NSBBF crystal has also proven its possible to acquire a large conversion efficiency from 532 nm to 266 nm. The stroll-off angle and deff from the NSBBF are Pretty much similar to All those of CLBO [seventeen].
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The beam profile shown in Figure 7b demonstrated a good beam top quality as one of several merits of Raman laser, which would be advantageous to produce a 193-nm DUV laser with a high quality beam.
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