Nevertheless, to be able to procedure the crystal may be very Sophisticated producing tactics are required. For the reason that dawn of this crystal, focusing on this obstacle, we are now the one company on this planet which might be processed in this crystal.
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The average energy from the NIR laser continue to has the opportunity to be improved to tens of watts like 70 W [26] if the double-go configuration may very well be used with the Yb:YAG SCF amplifier phase. For this reason, In case the conversion efficiency of 31% from NIR to DUV can be even now maintained at this better electrical power condition, the standard output ability in the DUV laser at 258 nm can be over twenty W, which might certainly be a outstanding electrical power degree to the DUV laser and bring on the unanticipated DUV laser machining outcomes. What's more, for high-energy DUV laser, the UV injury on the nonlinear crystal, such as the windows for CLBO crystal plus the mirrors, is yet another significant parameter for long-lasting and secure Procedure.
Then again, the beam quality of this increased power DUV laser would develop into even worse as a result of extra critical thermal and nonlinear consequences. Consequently, the frequency conversion procedures should be meticulously designed to mitigate the aforementioned more info effects. Therefore, a large-electricity DUV laser in the FHG of 1 μm with a great beam top quality could possibly be acquired and may be advantageous for obtaining the shorter wavelength DUV lasers like 193 nm by SFG.
Each the 1040 nm and 1078 nm laser come from one dual-wavelength Yb-doped fiber laser. Each and every laser is amplified by stages of fiber amplifier and Yb-doped materials amplifier, respectively.
On the opposite aspect, the ability scaling in the NIR laser is an additional facet to boost the ordinary ability on the 193-nm DUV laser. As a result of lack of the significant-electrical power amplification Answer in the NIR laser (by way of example at 1553 nm), nonlinear frequency processes which include optical parameter oscillation (OPO) may be placed on develop a wavelength converter by shifting the wavelength from one μm to the specified wavelength along with getting relative increased power [21]. Not long ago, a diamond Raman laser confirmed its capacity in acquiring a high electric power along with a substantial conversion performance at the 1st Stokes from the 1-μm laser [22,23], which suggests the likelihood for being utilized while in the 193-nm DUV laser era as a result of its large Raman achieve and enormous frequency change.
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Cesium Lithium Borate (CsLiB6O10 or CLBO) is the simplest non-linear crystal which generates ultraviolet harmonics with the Nd:YAG elementary laser wavelength. In an effort to improve the damage threshold, very low CLBO surface area roughness, by extremely-precision machining, is required. Because the CLBO crystal has uncomplicated hydroscopic reaction and micro scratches in machining, extremely-exact machining of the CLBO crystal is often a tough complex issue.
Tunable ultraviolet laser resource based upon stable-condition dye laser technological innovation and CsLiB6O10 harmonic era
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