Nonetheless, to be able to procedure the crystal is very State-of-the-art manufacturing procedures are necessary. Since the dawn of the crystal, working on this problem, we at the moment are the sole enterprise on this planet that can be processed Within this crystal.
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We summarized the current enhancement standing of the substantial-power DUV laser both of those with the wavelength of FHG of the 1-μm laser and at 193 nm. The recent growth from the stable-state/fiber laser, together with the nonlinear optical crystals, prompts not just the average energy but also the beam high quality (coherence) on the DUV lasers to an unprecedented amount.
The standard electricity on the NIR laser nonetheless has the probable for being enhanced to tens of watts such as 70 W [26] When the double-move configuration might be used for the Yb:YAG SCF amplifier phase. Hence, In case the conversion efficiency of 31% from NIR to DUV might be still maintained at this higher power ailment, the standard output ability in the DUV laser at 258 nm may very well be more than 20 W, which would become a amazing electric power stage with the DUV laser and result in the unanticipated DUV laser machining effects. Also, for prime-electric power DUV laser, the UV problems with the nonlinear crystal, such as the windows for CLBO crystal as well as the mirrors, is another crucial parameter for long lasting and stable Procedure.
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On one other facet, the ability scaling on the NIR laser is an additional element to enhance the average electricity of your 193-nm DUV laser. As a result of lack of the significant-electrical power amplification Resolution of the NIR laser (one example is at 1553 nm), nonlinear frequency processes which include optical parameter oscillation (OPO) could possibly be placed on create a wavelength converter by shifting the wavelength from 1 μm to the desired wavelength and also getting relative larger electric power [21]. Lately, a diamond Raman laser showed its capacity in accomplishing a high energy and also a superior conversion performance at the 1st Stokes from the 1-μm laser [22,23], which suggests the possibility to become applied in the 193-nm DUV laser era on account of its substantial Raman gain and enormous frequency change.
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The heartbeat period of the next Stokes light-weight was shortened to 5 ns as revealed in Figure 7a, a single-shot photo in the oscilloscope, which happens to be a typical phenomenon in Raman laser [forty four] whilst the heart beat duration in the pump laser was 10 ns.
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Tunable ultraviolet laser source according to strong-state dye laser engineering and CsLiB6O10 harmonic generation
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