What Does CLBO Crystal Mean?

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The standard ability in the NIR laser nonetheless has the potential being improved to tens of watts such as 70 W [26] If your double-pass configuration can be used for the Yb:YAG SCF amplifier phase. Therefore, Should the conversion effectiveness of 31% from NIR to DUV can be nevertheless managed at this greater electric power issue, the average output electricity of your DUV laser at 258 nm could possibly be in excess of 20 W, which would be described as a remarkable electrical power degree to the DUV laser and bring about the unanticipated DUV laser machining effects. What's more, for top-ability DUV laser, the UV damage of the nonlinear crystal, including the Home windows for CLBO crystal as well as mirrors, is yet another significant parameter for lasting and stable Procedure.

Conversely, the beam good quality of the larger energy DUV laser would come to be worse as a consequence of far more serious thermal and nonlinear results. Therefore, the frequency conversion processes need to be carefully created to mitigate the aforementioned results. As a result, a substantial-electric power DUV laser with the FHG of 1 μm with an excellent beam good quality could possibly be attained and will be advantageous for obtaining the shorter wavelength DUV lasers including 193 nm by SFG.

Equally the 1040 nm and 1078 nm laser come from a single dual-wavelength Yb-doped fiber laser. Just about every laser is amplified by phases of fiber amplifier and Yb-doped resources amplifier, respectively.

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Within the scientific and industrial applications, the beam good quality on the DUV laser is likewise a very important parameter. Significantly, the beam high-quality with the DUV laser substantially impacts the laser machining results. The beam excellent in the DUV laser is decided by that of the basic laser and the crystal to the frequency conversion. Lately, a significant-ability DUV laser (>10 W) at 258 nm was claimed having a beam excellent of M2 < 1.5, which was produced by FHG of the Yb:YAG laser at 1030 nm utilizing the CLBO crystal [13]. This laser would bring about an even better laser machining consequence in comparison with the past DUV lasers with larger M2.

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What's more, combining the reliable-point out laser with other nonlinear method which include stimulated Raman scattering, NIR lasers may be obtained at new wavelengths with large electricity and superior beam high quality, which was tested through the proof-of-theory experiment. This Raman laser scheme gives a different path to the superior-ability DUV laser, especially in the wavelength of 193 nm.

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The conversion performance from elementary NIR to DUV is from 5% to 36% based on the noted brings about Table one. Growing the conversion performance will reduce the load on the look and setup of the basic laser amplifier in addition to the electric powered electrical power intake. A very good beam top quality of the basic laser will likely contribute on the increasing in the conversion effectiveness together with the right power depth of the NIR and green more info laser within the SHG and FHG method, respectively. The highest conversion efficiencies from NIR to green and green to DUV laser by usage of CLBO crystal are 70% and all-around fifty%, respectively [12], which corresponds towards the conversion efficiency of 35% from essential to DUV.

The development with the 193-nm laser was demonstrated by phases of SFG. In order to scale the DUV laser electric power successfully, a different idea with the 193-nm DUV laser technology is presented determined by the diamond Raman laser.