The smart Trick of CLBO Crystal That Nobody is Discussing

The smart Trick of CLBO Crystal That Nobody is Discussing

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We summarized The existing development status of the high-power DUV laser both of those for the wavelength of FHG in the 1-μm laser and at 193 nm. The the latest progress on the reliable-state/fiber laser, together with the nonlinear optical crystals, prompts not just the normal energy but in addition the beam high quality (coherence) with the DUV lasers to an unparalleled amount.

The typical power of the NIR laser continue to has the opportunity being improved to tens of watts such as 70 W [26] If your double-move configuration may be utilized for that Yb:YAG SCF amplifier stage. Therefore, if the conversion effectiveness of 31% from NIR to DUV might be continue to preserved at this higher power condition, the average output electric power from the DUV laser at 258 nm may very well be greater than twenty W, which might become a impressive electricity level with the DUV laser and cause the unanticipated DUV laser machining outcomes. Additionally, for prime-electricity DUV laser, the UV harm on the nonlinear crystal, such as the windows for CLBO crystal and also the mirrors, is another important parameter for long-term and steady operation.

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Each the 1040 nm and 1078 nm laser come from a single dual-wavelength Yb-doped fiber laser. Each and every laser is amplified by stages of fiber amplifier and Yb-doped supplies amplifier, respectively.

On the opposite aspect, the power scaling of your NIR laser is an additional aspect to increase the normal electricity in the 193-nm DUV laser. Mainly because of the deficiency of the higher-ability amplification solution with the NIR laser (for example at 1553 nm), nonlinear frequency procedures for instance optical parameter oscillation (OPO) could be applied to build a wavelength converter by shifting the wavelength from one μm to the desired wavelength along with obtaining relative bigger electric power [21]. Just lately, a diamond Raman laser showed its capacity in achieving a large power along with a high conversion performance at the 1st Stokes in the 1-μm laser [22,23], which suggests the likelihood being used while in the 193-nm DUV laser era on account of its substantial Raman obtain and large frequency change.

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What's more, combining the sound-state laser with other nonlinear approach such as stimulated Raman scattering, NIR lasers can be obtained at new wavelengths with substantial electricity and significant beam good quality, which was check here examined by the proof-of-principle experiment. This Raman laser plan provides a completely new route to the superior-ability DUV laser, Specially for the wavelength of 193 nm.

The beam profile proven in Determine 7b shown a very good beam quality as one of several deserves of Raman laser, which might be valuable to deliver a 193-nm DUV laser with a top quality beam.

Its UV absorption edge reaches one hundred eighty nm. The successful nonlinear optical coefficient of CLBO for frequency doubling at 1064nm is about twice as large as that of KDP. CLBO crystals can be developed through the stoichiometric melt with lower viscosity.

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