Rumored Buzz on CLBO Crystal
Rumored Buzz on CLBO Crystal
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All-stable-condition ultraviolet lasers have been commonly Employed in the fields of mechanical flaw detection, lithography, micromachining and medication for the benefits of tiny volume, long life, superior efficiency, excellent beam high quality, wide tuning and narrow spectral line, etc. Making use of high power in the vicinity of-infrared coherent light-weight resource as the basic frequency source determined by nonlinear tuning know-how, producing ultraviolet coherent radiation by multistage frequency conversion is considered to be a crucial solution to build the ultraviolet coherent light-weight source.
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Based on the proof-of-theory experiment, the conversion performance of 23% implied the opportunity of attaining substantial-ability at the 2nd Stokes wavelength of the Raman laser. When the pump laser of 1078 nm could possibly be obtained at the typical energy of fifty W, the output ability of its 2nd Stokes wavelength at 1512 nm might be over 10 W. The design from the Raman laser cavity needs to be optimized in an effort to stay away from the damage of the M1 and diamond surface area.
The true secret dilemma of ultraviolet coherent gentle supply generally concentrates on the event of nonlinear optical frequency conversion crystal in ultraviolet band. The nonlinear optical crystal is without doubt one of the disorders for frequency transformation, so The expansion, dimensions, problems resistance, conversion effectiveness and allowable parameter selection of nonlinear optical crystal are necessary Progressively more.
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Both the 1040 nm and 1078 nm laser come from one dual-wavelength Yb-doped fiber laser. Each laser is amplified by phases of fiber amplifier and Yb-doped products amplifier, respectively.
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In the scientific and industrial applications, the beam high-quality on the DUV laser can be an important parameter. Significantly, the beam good quality of the DUV laser considerably affects the laser machining benefits. The beam high-quality from the DUV laser is set by that of the basic laser plus the crystal for the frequency conversion. Just lately, a superior-energy DUV laser (>10 W) at 258 nm was reported by using a beam quality of M2 < one.five, which was produced by FHG of the Yb:YAG laser at 1030 nm utilizing the CLBO crystal [13]. This laser would lead to an improved laser machining consequence in comparison to the preceding DUV lasers with larger sized M2.
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The beam profile shown in Figure 7b demonstrated a great beam top quality as among the list of deserves of Raman laser, which might be useful to make a 193-nm DUV laser with a top quality beam.
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