5 Simple Statements About CLBO Crystal Explained
5 Simple Statements About CLBO Crystal Explained
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All-solid-condition ultraviolet lasers are commonly Utilized in the fields of mechanical flaw detection, lithography, micromachining and medication for the benefits of little volume, long life, superior performance, fantastic beam excellent, broad tuning and narrow spectral line, and many others. Utilizing superior electric power around-infrared coherent light source as the elemental frequency supply dependant on nonlinear tuning engineering, creating ultraviolet coherent radiation by multistage frequency conversion is considered to be a vital way to produce the ultraviolet coherent light-weight source.
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The common energy from the NIR laser still has the opportunity to be enhanced to tens of watts including 70 W [26] When the double-pass configuration may very well be utilized with the Yb:YAG SCF amplifier stage. Hence, If your conversion efficiency of 31% from NIR to DUV may be nonetheless preserved at this greater energy ailment, the typical output electric power from the DUV laser at 258 nm may be a lot more than twenty W, which might certainly be a outstanding electricity stage with the DUV laser and lead to the unanticipated DUV laser machining outcomes. In addition, for prime-electrical power DUV laser, the UV injury with the nonlinear crystal, such as the windows for CLBO crystal and also the mirrors, is another significant parameter for long-lasting and stable operation.
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Each the 1040 nm and 1078 nm laser originate from one dual-wavelength Yb-doped fiber laser. Each individual laser is amplified by phases of fiber amplifier and Yb-doped components amplifier, respectively.
On the opposite aspect, the power scaling of your NIR laser is an additional facet to boost the average ability on the 193-nm DUV laser. As a result of lack of the higher-ability amplification Resolution of the NIR laser (one example is at 1553 nm), nonlinear frequency processes for instance optical parameter oscillation (OPO) might be applied to establish a wavelength converter by shifting the wavelength from 1 μm to the desired wavelength and obtaining relative higher electric power [21]. Not too long ago, a diamond Raman laser showed its means in reaching a higher electrical power as well as a large conversion effectiveness on the 1st Stokes with the 1-μm laser [22,23], which suggests the likelihood being applied within the 193-nm DUV laser generation because of its large Raman get and huge frequency change.
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The heart beat length of the second Stokes light-weight was shortened to 5 ns as shown in Determine 7a, a single-shot photo in the oscilloscope, and that is a common phenomenon in Raman laser [forty four] whilst the heartbeat period in the pump laser was ten ns.
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Tunable ultraviolet laser resource dependant on good-condition dye laser technological innovation and CsLiB6O10 harmonic generation
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The development on the 193-nm laser was shown by stages of SFG. So that you can scale the DUV laser electrical power correctly, a fresh thought of your 193-nm DUV laser generation is offered dependant on the diamond Raman laser.