What Does CLBO Crystal Mean?

What Does CLBO Crystal Mean?

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All-stable-point out ultraviolet lasers happen to be broadly Utilized in the fields of mechanical flaw detection, lithography, micromachining and medication for the benefits of compact volume, lengthy existence, large efficiency, superior beam high-quality, extensive tuning and narrow spectral line, etcetera. Employing significant electricity close to-infrared coherent mild source as the elemental frequency supply determined by nonlinear tuning technological know-how, creating ultraviolet coherent radiation by multistage frequency conversion is viewed as a very important strategy to establish the ultraviolet coherent light-weight supply.

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We summarized The present improvement position in the higher-electric power DUV laser equally at the wavelength of FHG in the one-μm laser and at 193 nm. The latest development on the strong-condition/fiber laser, together with the nonlinear optical crystals, prompts not merely the average ability and also the beam high quality (coherence) in the DUV lasers to an unparalleled level.

The main element problem of ultraviolet coherent light source primarily focuses on the event of nonlinear optical frequency conversion crystal in ultraviolet band. The nonlinear optical crystal is among the problems for frequency transformation, so the growth, size, injury resistance, conversion efficiency and allowable parameter array of nonlinear optical crystal are necessary A lot more.

Alternatively, the beam high quality of this higher electric power DUV laser would grow to be even worse resulting from a lot more critical thermal and nonlinear effects. That's why, the frequency conversion procedures should be very carefully intended to mitigate the aforementioned consequences. Consequently, a high-energy DUV laser on the FHG of 1 μm with an excellent beam good quality may very well be obtained and may be advantageous for obtaining the shorter wavelength DUV lasers including 193 nm by SFG.

Because of the thermal lens effect during the stable-condition lasers, In the event the heating administration is insufficient, it is not quick to get the sound-state laser that CLBO Crystal has a high ability plus a higher beam high-quality concurrently. Just lately, with the event of the thin disk laser and solitary-crystal fiber (SCF) laser, a superior-energy laser at the basic wavelength (one μm) were understood with a fantastic beam quality Despite a TEM00 method beam [4,24], which would be fantastic candidates for the elemental of your DUV laser technology. A further applicant for the fundamental will be the higher-energy fiber laser which may very well be reached by coherent beam blend with M2 price a lot less than one.

On the opposite facet, the ability scaling with the NIR laser is an additional facet to boost the average power with the 193-nm DUV laser. Due to insufficient the high-power amplification Option in the NIR laser (for example at 1553 nm), nonlinear frequency processes including optical parameter oscillation (OPO) may be placed on make a wavelength converter by shifting the wavelength from one μm to the desired wavelength in addition to getting relative greater ability [21]. Not too long ago, a diamond Raman laser confirmed its means in attaining a superior electrical power and also a high conversion effectiveness for the 1st Stokes of the 1-μm laser [22,23], which implies the possibility for being applied inside the 193-nm DUV laser generation as a result of its large Raman attain and enormous frequency shift.

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In the scientific and industrial applications, the beam quality from the DUV laser can also be an essential parameter. Especially, the beam quality of your DUV laser considerably influences the laser machining outcomes. The beam high quality with the DUV laser is set by that of the fundamental laser as well as crystal for that frequency conversion. Not too long ago, a higher-ability DUV laser (>ten W) at 258 nm was documented with a beam excellent of M2 < 1.five, which was created by FHG of a Yb:YAG laser at 1030 nm utilizing the CLBO crystal [thirteen]. This laser would result in an even better laser machining result as compared to the prior DUV lasers with more substantial M2.

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Also, combining the good-state laser with other nonlinear course of action like stimulated Raman scattering, NIR lasers may very well be accomplished at new wavelengths with substantial ability and higher beam top quality, which was examined because of the evidence-of-basic principle experiment. This Raman laser scheme delivers a new route to the higher-electricity DUV laser, In particular within the wavelength of 193 nm.

Tunable ultraviolet laser supply based upon stable-condition dye laser know-how and CsLiB6O10 harmonic technology

Its UV absorption edge reaches one hundred eighty nm. The efficient nonlinear optical coefficient of CLBO for frequency doubling at 1064nm is about 2 times as huge as that of KDP. CLBO crystals can be developed in the stoichiometric soften with reduce viscosity.

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