The best Side of CLBO Crystal
The best Side of CLBO Crystal
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All-good-state ultraviolet lasers have already been greatly used in the fields of mechanical flaw detection, lithography, micromachining and medication for the benefits of modest volume, very long life, superior performance, fantastic beam high-quality, broad tuning and slim spectral line, and so forth. Using higher energy in the vicinity of-infrared coherent light source as the fundamental frequency supply based upon nonlinear tuning engineering, building ultraviolet coherent radiation by multistage frequency conversion is considered to be a vital method to create the ultraviolet coherent mild supply.
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The real key dilemma of ultraviolet coherent gentle source predominantly focuses on the development of nonlinear optical frequency conversion crystal in ultraviolet band. The nonlinear optical crystal has become the conditions for frequency transformation, so the growth, sizing, problems resistance, conversion effectiveness and allowable parameter array of nonlinear optical crystal are needed A growing number of.
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Both the 1040 nm and 1078 nm laser come from a single twin-wavelength Yb-doped fiber laser. Every single laser is amplified by stages of fiber amplifier and Yb-doped supplies amplifier, respectively.
On one other facet, the facility scaling of the NIR laser is an additional facet to raise the typical electricity on the 193-nm DUV laser. Due to the deficiency of the substantial-electric power amplification Resolution with the NIR laser (for instance at 1553 nm), nonlinear frequency procedures for instance optical parameter oscillation (OPO) may be placed on create a wavelength converter by shifting the wavelength from 1 μm to the desired wavelength and also obtaining relative greater electricity [21]. Recently, a diamond Raman laser showed check here its skill in accomplishing a higher ability along with a substantial conversion effectiveness on the 1st Stokes of the one-μm laser [22,23], which implies the possibility being utilized within the 193-nm DUV laser era due to its high Raman obtain and enormous frequency change.
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Moreover, combining the good-point out laser with other nonlinear system which include stimulated Raman scattering, NIR lasers may very well be realized at new wavelengths with large power and superior beam high-quality, which was analyzed because of the evidence-of-principle experiment. This Raman laser plan presents a brand new path to the large-electric power DUV laser, Specifically at the wavelength of 193 nm.
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The conversion efficiency from basic NIR to DUV is from five% to 36% based on the claimed ends in Desk one. Raising the conversion efficiency will lessen the load on the design and set up of the elemental laser amplifier in addition to the electric powered electricity usage. An excellent beam high quality of the fundamental laser will even add to your growing of the conversion efficiency and the appropriate energy intensity of the NIR and inexperienced laser in the SHG and FHG approach, respectively. The highest conversion efficiencies from NIR to inexperienced and eco-friendly to DUV laser by usage of CLBO crystal are 70% and about fifty%, respectively [12], which corresponds to the conversion performance of 35% from basic to DUV.
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