CLBO Crystal Things To Know Before You Buy
CLBO Crystal Things To Know Before You Buy
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All-strong-condition ultraviolet lasers are greatly used in the fields of mechanical flaw detection, lithography, micromachining and medicine for the benefits of small quantity, very long daily life, significant performance, great beam quality, extensive tuning and slender spectral line, and many others. Making use of high electrical power in close proximity to-infrared coherent light-weight resource as the elemental frequency resource according to nonlinear tuning engineering, making ultraviolet coherent radiation by multistage frequency conversion is thought to be a vital technique to establish the ultraviolet coherent light resource.
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The common power with the NIR laser still has the likely to be improved to tens of watts such as 70 W [26] If your double-pass configuration could possibly be used with the Yb:YAG SCF amplifier phase. Therefore, In case the conversion performance of 31% from NIR to DUV could possibly be nonetheless preserved at this better ability ailment, the average output energy from the DUV laser at 258 nm might be over 20 W, which might certainly be a impressive electricity degree for the DUV laser and produce the unanticipated DUV laser machining success. Also, for high-power DUV laser, the UV problems in the nonlinear crystal, such as the windows for CLBO crystal and the mirrors, is an additional crucial parameter for long-lasting and steady Procedure.
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Because of the thermal lens outcome inside the good-state lasers, If your heating management is inadequate, It's not quick to obtain the reliable-point out laser with a large electric power plus a superior beam quality simultaneously. Not too long ago, with the development of The skinny disk laser and single-crystal fiber (SCF) laser, a large-electrical power laser at the basic wavelength (1 μm) had been understood with a very good beam excellent Despite having a TEM00 method beam [4,24], which might be fantastic candidates for the fundamental in the DUV laser technology. An additional applicant for the elemental will be the substantial-ability fiber laser which could be attained by coherent beam mix with M2 worth a lot less than 1.
On the other aspect, the ability scaling in the NIR laser is yet another aspect to improve the common ability on the 193-nm DUV laser. Because of the deficiency of the higher-power amplification Option of the more info NIR laser (by way of example at 1553 nm), nonlinear frequency procedures which include optical parameter oscillation (OPO) could possibly be placed on create a wavelength converter by shifting the wavelength from one μm to the desired wavelength in addition to obtaining relative larger electricity [21]. A short while ago, a diamond Raman laser showed its ability in obtaining a significant ability in addition to a superior conversion performance with the 1st Stokes on the 1-μm laser [22,23], which means the likelihood for being applied during the 193-nm DUV laser era due to its higher Raman gain and huge frequency shift.
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The conversion effectiveness from essential NIR to DUV is from 5% to 36% in accordance with the documented results in Desk one. Escalating the conversion performance will reduce the stress on the design and setup of the elemental laser amplifier in addition to the electric powered electrical power intake. A superb beam quality of the basic laser can even contribute for the raising of the conversion efficiency and also the right ability depth of the NIR and green laser inside the SHG and FHG approach, respectively. The very best conversion efficiencies from NIR to inexperienced and environmentally friendly to DUV laser by use of CLBO crystal are 70% and about 50%, respectively [twelve], which corresponds to your conversion effectiveness of 35% from elementary to DUV.
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