Rumored Buzz on CLBO Crystal
Rumored Buzz on CLBO Crystal
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All-strong-state ultraviolet lasers have already been broadly Utilized in the fields of mechanical flaw detection, lithography, micromachining and medicine for the benefits of little volume, long lifestyle, higher efficiency, superior beam high-quality, large tuning and slim spectral line, and many others. Utilizing high ability in close proximity to-infrared coherent mild resource as the fundamental frequency resource determined by nonlinear tuning technological know-how, making ultraviolet coherent radiation by multistage frequency conversion is thought to be a vital method to acquire the ultraviolet coherent light source.
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The normal electric power on the NIR laser nevertheless has the possible to generally be improved to tens of watts such as 70 W [26] if the double-go configuration could possibly be used to the Yb:YAG SCF amplifier phase. That's why, When the conversion effectiveness of 31% from NIR to DUV might be however managed at this bigger electricity situation, the common output ability in the DUV laser at 258 nm may very well be more than 20 W, which would become a extraordinary power stage for that DUV laser and produce the unanticipated DUV laser machining results. Furthermore, for high-electrical power DUV laser, the UV injury in the nonlinear crystal, including the Home windows for CLBO crystal and the mirrors, is yet another crucial parameter for lasting and steady operation.
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The two the 1040 nm and 1078 nm laser come from a person dual-wavelength Yb-doped fiber laser. Every laser is amplified by levels of fiber amplifier and Yb-doped products amplifier, respectively.
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In the scientific and industrial purposes, the beam quality of the DUV laser can also be an essential parameter. Especially, the beam high quality of your DUV laser radically influences the laser machining final results. The beam quality of your DUV laser is set by that of the elemental laser along with the crystal for your frequency conversion. Just lately, a large-power DUV laser (>ten W) at 258 nm was claimed having a beam high-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 bring on a greater laser machining final result when compared with the previous DUV lasers with more substantial M2.
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Moreover, more info combining the reliable-point out laser with other nonlinear procedure for instance stimulated Raman scattering, NIR lasers might be reached at new wavelengths with high electrical power and substantial beam high-quality, which was tested from the proof-of-basic principle experiment. This Raman laser scheme offers a whole new path to the significant-electricity DUV laser, Particularly on the wavelength of 193 nm.
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