All-good-point out ultraviolet lasers have been widely Employed in the fields of mechanical flaw detection, lithography, micromachining and drugs for some great benefits of small quantity, lengthy existence, higher effectiveness, very good beam quality, extensive tuning and slender spectral line, etcetera. Making use of significant ability close to-infrared coherent mild source as the fundamental frequency supply based on nonlinear tuning technological innovation, making ultraviolet coherent radiation by multistage frequency conversion is regarded as a crucial technique to build the ultraviolet coherent light supply.
In comparison with BBO it capabilities greater spectral and temperature acceptance, far better angle tolerance, and also a lesser wander-off angle. from 3289 $ supply
We summarized the current progress standing in the higher-electrical power DUV laser each within the wavelength of FHG in the 1-μm laser and at 193 nm. The recent progress from the stable-point out/fiber laser, in addition to the nonlinear optical crystals, prompts don't just the typical electric power but additionally the beam good quality (coherence) in the DUV lasers to an unprecedented stage.
The main element challenge of ultraviolet coherent gentle supply generally focuses on the event of nonlinear optical frequency conversion crystal in ultraviolet band. The nonlinear optical crystal is without doubt one of the circumstances for frequency transformation, so The expansion, sizing, damage resistance, conversion efficiency and allowable parameter array of nonlinear optical crystal are expected A growing number of.
Then again, the beam excellent of this increased electrical power DUV laser would turn out to be even worse as a result of more critical thermal and nonlinear consequences. Therefore, the frequency conversion procedures should be meticulously built to mitigate the aforementioned results. As a result, a high-electrical power DUV laser with the FHG of 1 μm with a superb beam excellent can be attained and will be advantageous for obtaining the shorter wavelength DUV lasers such as 193 nm by SFG.
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Furthermore, combining the solid-condition laser with other nonlinear system which include stimulated Raman scattering, NIR lasers may very well be attained at new wavelengths with high electric power and superior beam top quality, which was examined because of the proof-of-principle experiment. This Raman laser plan supplies a completely new route to the higher-electricity DUV laser, Primarily with the wavelength of 193 nm.
Tunable ultraviolet laser resource based on stable-point out dye laser technology and CsLiB6O10 harmonic generation
The conversion performance from basic NIR to DUV is from 5% to 36% in accordance with the documented results in Table one. Rising the conversion efficiency will decrease the stress on the design and setup of the fundamental laser amplifier and also the electric ability usage. A very good beam top quality of the elemental laser will even lead into the growing on the conversion performance in addition to the suitable electricity depth of your NIR and green laser inside the SHG and FHG approach, respectively. The very best conversion efficiencies from NIR to inexperienced and inexperienced to DUV laser by utilization of CLBO crystal are 70% and all around fifty%, respectively [12], which corresponds to your conversion effectiveness of 35% from essential to DUV.
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