The smart Trick of CLBO Crystal That No One is Discussing
The smart Trick of CLBO Crystal That No One is Discussing
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The main element difficulty of ultraviolet coherent gentle resource mainly 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, measurement, hurt resistance, conversion efficiency and allowable parameter variety of nonlinear optical crystal are necessary An increasing number of.
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Both equally the 1040 nm and 1078 nm laser come from one twin-wavelength Yb-doped fiber laser. Just about every laser is amplified by phases of fiber amplifier and Yb-doped resources amplifier, respectively.
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Within the scientific and industrial programs, the beam top quality on the DUV laser can be a significant parameter. Notably, the beam good quality on the DUV laser substantially impacts the laser machining results. The beam high-quality on the DUV laser is determined by that of the elemental laser as well as the crystal with the frequency conversion. Not long ago, a large-electricity DUV laser (>ten W) at 258 nm was documented which has a beam top quality of M2 < one.5, which was created by FHG of a Yb:YAG laser at 1030 nm utilizing the CLBO crystal [13]. This laser would result in an even better laser machining outcome compared to the preceding DUV lasers with larger M2.
The heart beat length of the 2nd Stokes gentle was shortened to 5 ns as demonstrated in Figure 7a, an individual-shot picture from the oscilloscope, and that is a typical phenomenon in Raman laser [forty four] although the heart beat duration of your pump laser was 10 ns.
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The conversion efficiency from basic NIR to DUV is from five% to 36% in accordance with the documented brings about Desk one. Escalating the conversion performance will reduce the load on the look and set up of the fundamental laser amplifier and also the electric electricity use. A good beam top quality of the fundamental laser may even add into the growing in the conversion effectiveness together with the right power depth with the NIR and environmentally friendly laser during the SHG and FHG system, respectively. The more info best conversion efficiencies from NIR to inexperienced and inexperienced to DUV laser by use of CLBO crystal are 70% and close to 50%, respectively [twelve], which corresponds on the conversion effectiveness of 35% from fundamental to DUV.
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