Nevertheless, in order to system the crystal is rather Superior producing tactics are needed. Considering that the dawn of the crystal, working on this problem, we at the moment are the sole corporation on earth which might be processed On this crystal.
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Based on the proof-of-theory experiment, the conversion effectiveness of 23% implied the opportunity of reaching large-electricity at the next Stokes wavelength on the Raman laser. If your pump laser of 1078 nm could be received at the normal ability of fifty W, the output ability of its 2nd Stokes wavelength at 1512 nm can be much more than ten W. The design from the Raman laser cavity should be optimized so that you can steer clear of the hurt of the M1 and diamond floor.
The real key difficulty of ultraviolet coherent light supply mainly concentrates on the development of nonlinear optical frequency conversion crystal in ultraviolet band. The nonlinear optical crystal has become the ailments for frequency transformation, so The expansion, sizing, damage resistance, conversion performance and allowable parameter array of nonlinear optical crystal are necessary A lot more.
On the other hand, the beam excellent of this better electrical power DUV laser would come to be worse on account of extra significant thermal and nonlinear effects. That's why, the frequency conversion procedures should be meticulously built to mitigate the aforementioned consequences. Thus, a large-ability DUV laser at the FHG of one μm with a good beam high quality might be obtained and may be effective for getting the shorter wavelength DUV lasers which include 193 nm by SFG.
Both of those the 1040 nm and 1078 nm laser originate from a single dual-wavelength Yb-doped fiber laser. Every laser is amplified by levels of fiber amplifier and Yb-doped elements amplifier, respectively.
On one other aspect, the ability scaling from the NIR laser is yet another component to improve the average ability with the 193-nm DUV laser. A result of the insufficient the high-electric power amplification Option in the NIR laser (for example at 1553 nm), nonlinear frequency processes such as optical parameter oscillation (OPO) may be placed on develop a wavelength converter by shifting the wavelength from one μm to the specified wavelength together with obtaining relative increased ability [21]. Not too long ago, a diamond Raman laser showed its skill in reaching a substantial ability along with a large conversion effectiveness with the 1st Stokes with the one-μm laser [22,23], which means the likelihood to become applied inside the 193-nm DUV laser generation due to its large Raman attain and large frequency change.
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The beam profile proven in Determine 7b shown a great beam good quality as one of the merits of Raman laser, which would be advantageous to create a 193-nm DUV laser with a website high quality beam.
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