Examine This Report on CLBO Crystal
Examine This Report on CLBO Crystal
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All-strong-condition ultraviolet lasers are actually widely Employed in the fields of mechanical flaw detection, lithography, micromachining and drugs for some great benefits of tiny volume, very long existence, high effectiveness, superior beam top quality, large tuning and narrow spectral line, etc. Employing large ability close to-infrared coherent mild supply as the elemental frequency resource according to nonlinear tuning technological know-how, generating ultraviolet coherent radiation by multistage frequency conversion is regarded as a vital solution to establish the ultraviolet coherent light-weight resource.
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In accordance with the evidence-of-principle experiment, the conversion efficiency of 23% implied the potential for attaining significant-power at the 2nd Stokes wavelength of the Raman laser. In the event the pump laser of 1078 nm may be received at the average ability of 50 W, the output energy of its 2nd Stokes wavelength at 1512 nm may be over ten W. The look of the Raman laser cavity ought to be optimized to be able to stay away from the problems in the M1 and diamond area.
The key issue of ultraviolet coherent light-weight resource mainly concentrates on the event of nonlinear optical frequency conversion crystal in ultraviolet band. The nonlinear optical crystal is without doubt one of the problems for frequency transformation, so The expansion, dimensions, problems resistance, conversion performance and allowable parameter choice of nonlinear optical crystal are expected A lot more.
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The two the 1040 nm and click here 1078 nm laser come from one twin-wavelength Yb-doped fiber laser. Each and every laser is amplified by phases of fiber amplifier and Yb-doped components amplifier, respectively.
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Furthermore, combining the good-state laser with other nonlinear course of action including stimulated Raman scattering, NIR lasers may very well be accomplished at new wavelengths with substantial ability and higher beam good quality, which was examined via the evidence-of-basic principle experiment. This Raman laser plan offers a fresh route to the substantial-electric power DUV laser, Particularly on the wavelength of 193 nm.
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The conversion efficiency from fundamental NIR to DUV is from five% to 36% according to the described leads to Desk 1. Raising the conversion efficiency will decrease the stress on the design and set up of the elemental laser amplifier plus the electric electricity use. An excellent beam excellent of the basic laser will also contribute on the expanding from the conversion efficiency and also the right ability depth of the NIR and eco-friendly laser inside the SHG and FHG approach, respectively. The very best conversion efficiencies from NIR to inexperienced and inexperienced to DUV laser by utilization of CLBO crystal are 70% and close to 50%, respectively [twelve], which corresponds into the conversion performance of 35% from elementary to DUV.
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