All-sound-state ultraviolet lasers happen to be extensively used in the fields of mechanical flaw detection, lithography, micromachining and medicine for some great benefits of compact quantity, very long lifetime, significant effectiveness, great beam high quality, wide tuning and slim spectral line, and so forth. Utilizing superior electric power around-infrared coherent gentle supply as the fundamental frequency supply depending on nonlinear tuning technologies, building ultraviolet coherent radiation by multistage frequency conversion is considered an important strategy to build the ultraviolet coherent light source.
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For instance, the current concave OC could be replaced by a airplane mirror which could mitigate the ability density over the surface area of M1 as well as diamond. In addition, applying higher problems threshold coatings for M1 and diamond would also Increase the output energy with no damages. Then, the NIR laser for the 2nd Stokes wavelength could be high plenty of, and its good beam top quality, to make the final DUV laser at 193 nm having a higher typical electrical power.
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The two the 1040 nm and 1078 nm laser originate from a single twin-wavelength Yb-doped fiber laser. Each laser is amplified by levels of fiber amplifier and Yb-doped resources amplifier, respectively.
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The heartbeat period of the next Stokes light-weight was shortened to 5 ns as shown in Figure 7a, a single-shot photograph from the oscilloscope, and that is a common phenomenon in Raman laser [forty four] whilst the heart beat duration with the pump laser was 10 ns.
Cesium Lithium Borate (CsLiB6O10 or CLBO) is the simplest non-linear crystal which generates ultraviolet harmonics of your Nd:YAG essential laser wavelength. So that you can greatly enhance the problems threshold, very low CLBO surface area roughness, by ultra-precision machining, is necessary. Since the CLBO crystal has straightforward hydroscopic reaction and micro scratches in machining, extremely-exact machining on the CLBO crystal is actually a tough technological dilemma.
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Its UV absorption edge reaches one hundred eighty nm. The efficient nonlinear optical coefficient of CLBO for frequency doubling at 1064nm is about twice as significant as that of KDP. CLBO crystals might be grown within the stoichiometric melt with lessen viscosity.
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