The best Side of CLBO Crystal
The best Side of CLBO Crystal
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All-strong-state ultraviolet lasers are actually widely used in the fields of mechanical flaw detection, lithography, micromachining and medicine for the benefits of modest quantity, prolonged everyday living, high performance, fantastic beam excellent, extensive tuning and narrow spectral line, etcetera. Making use of substantial electrical power close to-infrared coherent mild source as the elemental frequency supply depending on nonlinear tuning know-how, producing ultraviolet coherent radiation by multistage frequency conversion is regarded as an important strategy to develop the ultraviolet coherent gentle source.
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The average power on the NIR laser even now has the opportunity being enhanced to tens of watts such as 70 W [26] If your double-pass configuration may very well be utilized for your Yb:YAG SCF amplifier stage. That's why, When the conversion efficiency of 31% from NIR to DUV might be nonetheless taken care of at this bigger electrical power affliction, the common output electric power with the DUV laser at 258 nm may very well be more than twenty W, which might become a impressive energy stage with the DUV laser and lead to the unanticipated DUV laser machining benefits. What's more, for top-power DUV laser, the UV injury from the nonlinear crystal, such as the Home windows for CLBO crystal along with the mirrors, is yet another vital parameter for lasting and steady operation.
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On one other aspect, the ability scaling from the NIR laser is another part to increase the ordinary ability with the 193-nm DUV laser. Due to insufficient the high-ability amplification Remedy of the NIR laser (one example is at 1553 nm), nonlinear frequency processes for instance optical parameter oscillation (OPO) may be applied to make a wavelength converter by shifting the wavelength from 1 μm to the desired wavelength and acquiring relative higher electricity [21]. Lately, a diamond Raman laser confirmed its ability in attaining a superior energy plus a superior conversion performance in the 1st Stokes on the 1-μm laser [22,23], which implies the likelihood to become applied from the 193-nm DUV laser technology because of its higher Raman acquire and large frequency change.
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The pulse period of the next Stokes light was shortened to five ns as demonstrated in Figure 7a, only one-shot image within the oscilloscope, that's a common phenomenon in Raman laser [44] when the pulse length of your pump laser was 10 ns.
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The beam profile demonstrated in Figure 7b demonstrated an excellent beam high-quality as one of many merits of Raman laser, which might be valuable to produce a 193-nm DUV laser with a high quality beam.
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