The smart Trick of CLBO Crystal That Nobody is Discussing
The smart Trick of CLBO Crystal That Nobody is Discussing
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Nevertheless, so as to course of action the crystal may be very Sophisticated production techniques are required. For the reason that dawn of this crystal, working on this problem, we at the moment are the only firm in the world which might be processed On this crystal.
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Based on the proof-of-principle experiment, the conversion efficiency of 23% implied the possibility of reaching superior-electric power at the next Stokes wavelength of the Raman laser. Should the pump laser of 1078 nm could possibly be obtained at the standard ability of 50 W, the output energy of its 2nd Stokes wavelength at 1512 nm could be over 10 W. The design of your Raman laser cavity really should be optimized in order to steer clear of the hurt of the M1 and diamond surface.
For instance, the current concave OC could get replaced by a aircraft mirror which could mitigate the facility density within the floor of M1 and also the diamond. In addition, employing substantial damage threshold coatings for M1 and diamond would also improve the output ability with no damages. Then, the NIR laser within the 2nd Stokes wavelength can be high plenty of, as well as its great beam high-quality, to generate the ultimate DUV laser at 193 nm that has a large average electric power.
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As a result of thermal lens result from the strong-condition lasers, if the heating administration is insufficient, It isn't simple to get the stable-point out laser using a higher ability and also a substantial beam high quality simultaneously. Not too long ago, with the event of the click here thin disk laser and one-crystal fiber (SCF) laser, a large-energy laser at the fundamental wavelength (one μm) had been realized with a good beam good quality even with a TEM00 method beam [four,24], which might be superior candidates for the basic of the DUV laser technology. An additional prospect for the basic could be the superior-ability fiber laser which may be reached by coherent beam mix with M2 price under one.
On the opposite side, the facility scaling from the NIR laser is an additional facet to increase the regular ability of the 193-nm DUV laser. Mainly because of the not enough the higher-electric power amplification solution in the NIR laser (for instance at 1553 nm), nonlinear frequency processes for example optical parameter oscillation (OPO) could possibly be applied to build a wavelength converter by shifting the wavelength from one μm to the specified wavelength in addition to getting relative bigger ability [21]. Not long ago, a diamond Raman laser confirmed its skill in attaining a large power and also a high conversion performance within the 1st Stokes of your 1-μm laser [22,23], which means the chance for being used in the 193-nm DUV laser era as a consequence of its substantial Raman obtain and enormous frequency shift.
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The beam profile demonstrated in Determine 7b shown a very good beam quality as one of many merits of Raman laser, which would be effective to create a 193-nm DUV laser with a top quality beam.
Its UV absorption edge reaches 180 nm. The effective nonlinear optical coefficient of CLBO for frequency doubling at 1064nm is about 2 times as massive as that of KDP. CLBO crystals could be grown through the stoichiometric soften with decrease viscosity.
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