The 2-Minute Rule for CLBO Crystal
The 2-Minute Rule for CLBO Crystal
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All-good-state ultraviolet lasers are actually widely Employed in the fields of mechanical flaw detection, lithography, micromachining and drugs for some great benefits of smaller quantity, prolonged life, high performance, good beam top quality, vast tuning and narrow spectral line, and so on. Utilizing high power around-infrared coherent gentle resource as the basic frequency resource based upon nonlinear tuning know-how, producing ultraviolet coherent radiation by multistage frequency conversion is considered to be a crucial approach to establish the ultraviolet coherent mild supply.
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We summarized the current development status from the superior-electricity DUV laser both with the wavelength of FHG of your one-μm laser and at 193 nm. The current advancement on the stable-point out/fiber laser, together with the nonlinear optical crystals, prompts not only the typical energy but additionally the beam top quality (coherence) in the DUV lasers to an unprecedented stage.
The common energy with the NIR laser nonetheless has the probable to become improved to tens of watts for instance 70 W [26] When the double-go configuration might be used with the Yb:YAG SCF amplifier stage. As a result, In the event the conversion effectiveness of 31% from NIR to DUV could be nevertheless preserved at this better electricity affliction, the standard output power of the DUV laser at 258 nm might be in excess of 20 W, which would be a remarkable ability stage with the DUV laser and bring on the unanticipated DUV laser machining outcomes. Moreover, for top-energy DUV laser, the UV destruction with the nonlinear crystal, including the windows for CLBO crystal as well as mirrors, is an additional critical parameter for long run and secure operation.
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On the other facet, the ability scaling with the NIR laser is another component to boost the ordinary electrical power of your 193-nm DUV laser. As a result of not enough the higher-power amplification Resolution of your NIR laser (for instance at 1553 nm), nonlinear frequency processes which include optical parameter oscillation (OPO) may be placed on produce a wavelength converter by shifting the wavelength from 1 μm to the desired wavelength together with getting relative higher electrical power [21]. Not long ago, a diamond Raman laser confirmed its capability in attaining a substantial electric power in addition to a superior conversion efficiency on the 1st Stokes in the 1-μm laser [22,23], which implies the possibility to generally be used click here inside the 193-nm DUV laser generation thanks to its significant Raman achieve and enormous frequency shift.
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Furthermore, combining the good-point out laser with other nonlinear process for instance stimulated Raman scattering, NIR lasers might be realized at new wavelengths with higher electricity and superior beam top quality, which was examined by the evidence-of-principle experiment. This Raman laser scheme gives a different path to the superior-power DUV laser, Particularly in the wavelength of 193 nm.
Tunable ultraviolet laser source based on sound-point out dye laser technological know-how and CsLiB6O10 harmonic era
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