Examine This Report on CLBO Crystal

Examine This Report on CLBO Crystal

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We summarized the current enhancement standing of the substantial-electrical power DUV laser both of those for the wavelength of FHG on the one-μm laser and at 193 nm. The modern advancement from the good-condition/fiber laser, as well as the nonlinear optical crystals, prompts not merely the standard electrical power but additionally the beam excellent (coherence) of your DUV lasers to an unprecedented degree.

The normal electric power on the NIR laser nevertheless has the probable for being improved to tens of watts such as 70 W [26] Should the double-move configuration could be utilized for the Yb:YAG SCF amplifier stage. For this reason, In the event the conversion performance of 31% from NIR to DUV may very well be nevertheless maintained at this larger electricity situation, the standard output electricity of your DUV laser at 258 nm could possibly be much more than twenty W, which would be considered a outstanding power level to the DUV laser and cause the unanticipated DUV laser machining effects. Moreover, for top-power DUV laser, the UV damage with the nonlinear crystal, such as the Home windows for CLBO crystal as well as mirrors, is an additional significant parameter for long-lasting and stable Procedure.

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On the opposite aspect, the ability scaling on the NIR laser is an additional factor to boost the common energy of the 193-nm DUV laser. Due to the deficiency of the large-power amplification Option on the NIR laser (as an example at 1553 nm), nonlinear frequency procedures including optical parameter oscillation (OPO) could be applied to produce a wavelength converter by shifting the wavelength from 1 μm to the specified wavelength in addition to acquiring relative higher electricity [21]. Lately, a diamond Raman laser confirmed its ability in obtaining a significant energy plus a high conversion efficiency with the 1st Stokes with here the one-μm laser [22,23], which implies the possibility to get utilized while in the 193-nm DUV laser era as a consequence of its superior Raman attain and enormous frequency shift.

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The conversion performance from basic NIR to DUV is from five% to 36% based on the claimed ends in Desk one. Escalating the conversion efficiency will decrease the stress on the design and set up of the fundamental laser amplifier and also the electric electricity intake. A great beam excellent of the fundamental laser may even add towards the rising of your conversion efficiency and also the right power intensity in the NIR and eco-friendly laser while in the SHG and FHG course of action, respectively. The best conversion efficiencies from NIR to inexperienced and inexperienced to DUV laser by utilization of CLBO crystal are 70% and all around 50%, respectively [12], which corresponds to the conversion performance of 35% from elementary to DUV.

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