CLBO Crystal Can Be Fun For Anyone
CLBO Crystal Can Be Fun For Anyone
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We summarized the current development standing of the superior-electricity DUV laser each in the wavelength of FHG of your 1-μm laser and at 193 nm. The the latest advancement of your sound-state/fiber laser, together with the nonlinear optical crystals, prompts don't just the common power but in addition the beam top quality (coherence) of your DUV lasers to an unprecedented stage.
The standard electrical power in the NIR laser even now has the prospective for being enhanced to tens of watts which include 70 W [26] Should the double-move configuration could possibly be utilized with the Yb:YAG SCF amplifier stage. Therefore, Should the conversion effectiveness of 31% from NIR to DUV can be even now taken care of at this bigger electrical power ailment, the typical output energy from the DUV laser at 258 nm may very well be much more than twenty W, which would be described as a remarkable energy stage with the DUV laser and bring about the unanticipated DUV laser machining effects. Moreover, for high-energy DUV laser, the UV injury in the nonlinear crystal, including the windows for CLBO crystal and the mirrors, is yet another important parameter for long term and secure Procedure.
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On another side, the facility scaling of the NIR laser is another facet to raise the normal electricity of your 193-nm DUV laser. Mainly because of the insufficient the superior-energy amplification Option with the NIR laser (for example at 1553 nm), nonlinear frequency processes such as more info optical parameter oscillation (OPO) can be placed on make a wavelength converter by shifting the wavelength from one μm to the desired wavelength together with obtaining relative increased electrical power [21]. A short while ago, a diamond Raman laser showed its means in accomplishing a superior electric power along with a higher conversion efficiency for the 1st Stokes of your one-μm laser [22,23], which means the chance to generally be used in the 193-nm DUV laser era as a consequence of its significant Raman get and enormous frequency change.
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In the scientific and industrial applications, the beam top quality of the DUV laser can also be an essential parameter. Especially, the beam top quality on the DUV laser considerably impacts the laser machining outcomes. The beam high-quality with the DUV laser is determined by that of the elemental laser along with the crystal for the frequency conversion. Not long ago, a higher-ability DUV laser (>10 W) at 258 nm was described having a beam high-quality of M2 < 1.five, which was created by FHG of a Yb:YAG laser at 1030 nm using the CLBO crystal [thirteen]. This laser would bring about a far better laser machining end result compared to the preceding DUV lasers with larger M2.
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