A Secret Weapon For CLBO Crystal
A Secret Weapon For CLBO Crystal
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On this paper, The brand new lapping slurry and sprucing slurry are introduced. Along with the deliquescence diploma of CLBO is fallen to most affordable. A whole new working engineering can be adopted. Just after tough sprucing, the concentration of extremely-precision sprucing slurry is amplified effectively. So does the extremely-precision sprucing pace, plus the wiping velocity is quicker when compared to the deliquescence pace. The CLBO crystal floor roughness can accomplish 1nm and hold the surface area top quality effectively. Obtain by way of your institution
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As an example, The existing concave OC could be replaced by a plane mirror which could mitigate the facility density around the surface area of M1 along with the diamond. Moreover, using high hurt threshold coatings for M1 and diamond would also Enhance the output electric power without any damages. Then, the NIR laser on the 2nd Stokes wavelength can be large plenty of, in addition to its very good beam top quality, to crank out the ultimate DUV laser at 193 nm using a substantial regular electricity.
Alternatively, the beam high quality of this bigger electricity DUV laser would turn into even worse as a consequence of far more severe thermal and nonlinear results. Hence, the frequency conversion processes must be meticulously designed to mitigate the aforementioned outcomes. Thus, a large-power DUV laser on the FHG of one μm with a good beam excellent can be attained and may be valuable for obtaining the shorter wavelength DUV lasers such as 193 nm by SFG.
A result of the thermal lens effect inside the good-state lasers, If your heating administration is insufficient, It's not at all quick to get the solid-condition laser which has a large power as well as a higher beam high quality simultaneously. A short while ago, with the development of The skinny disk laser and one-crystal fiber (SCF) laser, a large-power laser at the fundamental wavelength (1 μm) were understood with a great beam high-quality In spite of a TEM00 manner beam [four,24], which might be fantastic candidates for the elemental of your DUV laser technology. A further prospect for the basic is definitely the superior-ability fiber laser which could be achieved by coherent beam blend with M2 price fewer than one.
On one other facet, the ability scaling in the NIR laser is an additional element to increase the typical electric power on the 193-nm DUV laser. Due to insufficient the higher-ability amplification Resolution from the NIR laser (one example is at 1553 nm), nonlinear frequency processes for instance optical parameter oscillation (OPO) might be applied to establish a wavelength converter by shifting the wavelength from 1 μm to the desired wavelength and also getting relative higher electricity [21]. A short while ago, a diamond Raman laser showed its capacity in obtaining a high power and a large conversion effectiveness within the 1st Stokes of the 1-μm laser [22,23], which implies the possibility to get utilized while in the 193-nm DUV laser era as a consequence of its superior Raman attain and enormous frequency change.
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In the scientific and industrial programs, the beam good quality on the DUV laser is likewise a very important parameter. Specifically, the beam good quality of your DUV laser dramatically impacts the laser machining final results. The beam excellent of your DUV laser is determined by that of the elemental laser as well as crystal with the frequency conversion. Recently, a substantial-electrical power DUV laser (>10 W) at 258 nm was claimed having a beam high quality of M2 < one.five, which was created by FHG of the Yb:YAG laser at 1030 nm using the CLBO crystal [thirteen]. This laser would bring about a better laser machining outcome when compared to the previous DUV lasers with bigger M2.
The heartbeat period of the second Stokes light was shortened to five ns as shown in Figure click here 7a, only one-shot image with the oscilloscope, that is a typical phenomenon in Raman laser [forty four] while the heartbeat length of your pump laser was 10 ns.
Cesium Lithium Borate (CsLiB6O10 or CLBO) is the most effective non-linear crystal which generates ultraviolet harmonics of your Nd:YAG elementary laser wavelength. As a way to improve the hurt threshold, lower CLBO area roughness, by ultra-precision machining, is needed. As the CLBO crystal has straightforward hydroscopic reaction and micro scratches in machining, extremely-precise machining with the CLBO crystal is actually a complicated specialized problem.
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The event in the 193-nm laser was shown by stages of SFG. So as to scale the DUV laser power properly, a completely new idea on the 193-nm DUV laser technology is introduced based on the diamond Raman laser.