5 Essential Elements For CLBO Crystal
5 Essential Elements For CLBO Crystal
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All-good-condition ultraviolet lasers are commonly Employed in the fields of mechanical flaw detection, lithography, micromachining and drugs for some great benefits of smaller volume, extensive life, higher effectiveness, very good beam good quality, wide tuning and slender spectral line, and so forth. Using high ability in close proximity to-infrared coherent mild resource as the fundamental frequency supply based on nonlinear tuning technology, building ultraviolet coherent radiation by multistage frequency conversion is considered a significant strategy to develop the ultraviolet coherent light source.
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We summarized The present advancement position with the substantial-energy DUV laser the two on the wavelength of FHG of the one-μm laser and at 193 nm. The latest development on the reliable-state/fiber laser, plus the nonlinear optical crystals, prompts not only the common electric power but additionally the beam high-quality (coherence) from the DUV lasers to an unparalleled amount.
The normal power of the NIR laser nonetheless has the potential to be improved to tens of watts for example 70 W [26] When the double-go configuration could possibly be utilized to the Yb:YAG SCF amplifier phase. For this reason, if the conversion efficiency of 31% from NIR to DUV could be nevertheless preserved at this better ability condition, the standard output power of the DUV laser at 258 nm might be over twenty W, which would be considered a exceptional electrical power level with the DUV laser and bring on the unanticipated DUV laser machining final results. Furthermore, for top-electricity DUV laser, the UV harm on the nonlinear crystal, such as the Home windows for CLBO crystal and also the mirrors, is yet another critical parameter for long-term and secure operation.
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Both the 1040 nm and 1078 nm laser originate from a person dual-wavelength Yb-doped fiber laser. Each individual laser is amplified by levels of fiber amplifier and Yb-doped elements amplifier, respectively.
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In the scientific and industrial purposes, the beam quality of your DUV laser is likewise a vital parameter. Especially, the beam high-quality on the DUV laser significantly influences the laser machining benefits. The beam high quality with the DUV laser is determined by that of the fundamental laser plus the crystal for the frequency conversion. Just lately, a superior-electrical power DUV laser (>10 W) at 258 nm was described with a beam top quality of M2 < 1.5, which was produced by FHG of a Yb:YAG laser more info at 1030 nm utilizing the CLBO crystal [13]. This laser would bring on a much better laser machining end result as compared to the previous DUV lasers with larger M2.
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The beam profile demonstrated in Determine 7b demonstrated a superb beam excellent as among the merits of Raman laser, which would be advantageous to deliver a 193-nm DUV laser with a top quality beam.
Its UV absorption edge reaches 180 nm. The productive nonlinear optical coefficient of CLBO for frequency doubling at 1064nm is about twice as significant as that of KDP. CLBO crystals might be developed through the stoichiometric soften with decreased viscosity.
The event in the 193-nm laser was shown by levels of SFG. To be able to scale the DUV laser power successfully, a different concept in the 193-nm DUV laser era is offered dependant on the diamond Raman laser.