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The common electrical power from the NIR laser still has the possible to get improved to tens of watts like 70 W [26] In case the double-move configuration might be used for that Yb:YAG SCF amplifier stage. As a result, if the conversion efficiency of 31% from NIR to DUV may be nevertheless maintained at this larger power affliction, the typical output electricity of your DUV laser at 258 nm might be in excess of twenty W, which might be a extraordinary electricity amount for the DUV laser and cause the unanticipated DUV laser machining benefits. What's more, for high-energy DUV laser, the UV injury on the nonlinear crystal, such as the windows for CLBO crystal along with the mirrors, is another important parameter for long-lasting and secure Procedure.

However, the beam high-quality of this higher energy DUV laser would come to be worse as a consequence of far more serious thermal and nonlinear results. As a result, the frequency conversion procedures needs to be thoroughly meant to mitigate the aforementioned effects. Hence, a substantial-ability DUV laser with the FHG of 1 μm with a superb beam excellent may very well be received and can be helpful for obtaining the shorter wavelength DUV lasers such as 193 nm by SFG.

Equally the 1040 nm and 1078 nm laser originate from a person twin-wavelength Yb-doped fiber laser. Just about every laser is amplified by stages of fiber amplifier and Yb-doped materials amplifier, respectively.

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During the scientific and industrial apps, the beam high-quality with the DUV laser is usually an important parameter. Particularly, the beam high-quality with the DUV laser substantially affects the laser machining results. The beam excellent in the DUV laser is determined by that of the elemental laser as well as crystal for that frequency conversion. Not too long ago, a higher-ability DUV laser (>10 W) at 258 nm was documented which has a beam top quality of M2 < 1.five, which was generated by FHG of a Yb:YAG laser at 1030 nm utilizing the CLBO crystal [13]. This laser would cause a better laser machining consequence compared to the earlier DUV lasers with much larger M2.

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In addition, combining the stable-point out laser with other nonlinear method which include stimulated Raman scattering, NIR lasers may be achieved at new wavelengths with large electric power and high beam high quality, which was examined with the evidence-of-theory experiment. This Raman laser plan supplies a completely new path to the large-electricity DUV laser, Primarily within the wavelength of 193 nm.

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Its UV absorption edge reaches one hundred eighty nm. The efficient nonlinear optical coefficient of CLBO for frequency doubling at 1064nm is about 2 times as large as that of KDP. CLBO crystals is usually grown in the stoichiometric soften with decrease viscosity.

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