All-stable-condition ultraviolet lasers happen to be greatly used in the fields of mechanical flaw detection, lithography, micromachining and medicine for the advantages of modest volume, very long everyday living, significant effectiveness, very good beam good quality, vast tuning and narrow spectral line, etc. Employing substantial power in the vicinity of-infrared coherent mild resource as the basic frequency source according to nonlinear tuning engineering, producing ultraviolet coherent radiation by multistage frequency conversion is regarded as a very important strategy to develop the ultraviolet coherent mild resource.
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We summarized The present improvement position in the higher-ability DUV laser both equally on the wavelength of FHG of your 1-μm laser and at 193 nm. The latest improvement of your good-state/fiber laser, and also the nonlinear optical crystals, prompts don't just the common power and also the beam high quality (coherence) with the DUV lasers to an unprecedented degree.
The key dilemma of ultraviolet coherent gentle supply generally concentrates on the event of nonlinear optical frequency conversion crystal in ultraviolet band. The nonlinear optical crystal is without doubt one of the disorders for frequency transformation, so The expansion, sizing, problems resistance, conversion effectiveness and allowable parameter variety of nonlinear optical crystal are demanded A lot more.
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LBO is likewise a great nonlinear crystal which is usually placed on the SHG from the NIR for the green. The DUV laser is often understood by two levels of SFG during the LBO crystals because there isn't a period-matching angle for LBO to transform the green laser at 515 nm or 532 nm for the DUV specifically by SHG [sixteen]. Recently, the NSBBF crystal has also shown its potential to acquire a higher conversion performance from 532 nm to 266 nm. The wander-off angle and deff with the NSBBF are Just about just like Individuals of CLBO [17].
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Moreover, combining the sound-point out laser with other nonlinear procedure for instance stimulated Raman scattering, NIR lasers could be reached at new wavelengths with significant energy and large beam good quality, which was analyzed via the evidence-of-basic principle experiment. This Raman laser plan offers a whole new path to the substantial-electric power DUV laser, Specifically within the wavelength of 193 nm.
Tunable ultraviolet laser source dependant on good-condition dye laser technological innovation and CsLiB6O10 harmonic era
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The event in the 193-nm laser was shown by stages of SFG. So as to scale the DUV laser electrical power effectively, a different idea on the 193-nm DUV laser technology is presented determined by the diamond Raman laser.