A Secret Weapon For CLBO Crystal
A Secret Weapon For CLBO Crystal
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The common power on the NIR laser still has the prospective being enhanced to tens of watts for example 70 W [26] When the double-move configuration can be utilized for your Yb:YAG SCF amplifier stage. That's why, Should the conversion performance of 31% from NIR to DUV might be however managed at this bigger power situation, the typical output electrical power in the DUV laser at 258 nm could possibly be a lot more than 20 W, which might certainly be a remarkable energy degree for that DUV laser and bring on the unanticipated DUV laser machining success. Moreover, for top-power DUV laser, the UV damage of the nonlinear crystal, including the windows for CLBO crystal and also the mirrors, is another significant parameter for lasting and steady operation.
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Both equally the 1040 nm and 1078 nm laser come from 1 dual-wavelength Yb-doped fiber laser. Each individual laser is amplified by levels of fiber amplifier and Yb-doped resources amplifier, respectively.
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Within the scientific and industrial applications, the beam high-quality of your DUV laser is usually a very important parameter. Especially, the beam quality of your DUV laser radically influences the laser machining outcomes. The beam quality with the DUV laser is determined by that of the elemental laser as well as the crystal with the frequency conversion. Just lately, a higher-electric power DUV laser (>10 W) at 258 nm was documented by using a beam quality of M2 < 1.5, which was created by FHG of the Yb:YAG laser at 1030 nm using the CLBO crystal [13]. This laser would cause an even better laser machining result when compared to the previous DUV lasers with greater M2.
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Additionally, combining the good-point out laser with other nonlinear approach which include stimulated Raman scattering, NIR lasers might be reached at new wavelengths with significant electric power and superior beam high-quality, which was analyzed because of the evidence-of-theory experiment. This Raman laser scheme presents a completely new path to the large-electrical power DUV laser, Particularly in the wavelength of 193 nm.
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The conversion efficiency from elementary NIR to DUV is from five% to 36% according to the described brings about Table 1. Escalating the conversion effectiveness will reduce the burden on the design and set up of the elemental laser amplifier and also the electric electricity use. An read more excellent beam excellent of the elemental laser will even lead to your increasing in the conversion effectiveness together with the right electricity intensity on the NIR and inexperienced laser from the SHG and FHG system, respectively. The best conversion efficiencies from NIR to environmentally friendly and environmentally friendly to DUV laser by utilization of CLBO crystal are 70% and close to 50%, respectively [twelve], which corresponds to the conversion performance of 35% from elementary to DUV.
The development with the 193-nm laser was shown by stages of SFG. In an effort to scale the DUV laser power properly, a new principle of your 193-nm DUV laser generation is offered based on the diamond Raman laser.