What Does CLBO Crystal Mean?

What Does CLBO Crystal Mean?

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All-good-condition ultraviolet lasers have been widely used in the fields of mechanical flaw detection, lithography, micromachining and medication for some great benefits of smaller volume, very long lifetime, higher performance, fantastic beam excellent, vast tuning and narrow spectral line, and so forth. Employing large electric power near-infrared coherent mild resource as the elemental frequency supply based upon nonlinear tuning technology, producing ultraviolet coherent radiation by multistage frequency conversion is regarded as an essential approach to build the ultraviolet coherent light-weight supply.

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The standard power of the NIR laser still has the potential to be enhanced to tens of watts for instance 70 W [26] if the double-go configuration can be used to the Yb:YAG SCF amplifier stage. Hence, If your conversion efficiency of 31% from NIR to DUV may very well be nevertheless managed at this increased energy affliction, the average output electrical power with the DUV laser at 258 nm can be a lot more than twenty W, which would become a extraordinary energy amount for the DUV laser and cause the unanticipated DUV laser machining effects. What's more, for top-electric power DUV laser, the UV destruction of your nonlinear crystal, such as the Home windows for CLBO crystal along with the mirrors, is yet another vital parameter for long-lasting and secure operation.

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Due to the thermal lens result within the good-condition lasers, Should the heating management is inadequate, It isn't effortless to obtain the sound-state laser that has a superior energy and a large beam high-quality concurrently. Not long ago, with the event of The skinny disk laser and single-crystal fiber (SCF) laser, a substantial-ability laser at the elemental wavelength (1 μm) were understood with a superb beam excellent Despite a TEM00 mode beam [four,24], which would be excellent candidates for the elemental of your DUV laser technology. A further prospect for the basic is definitely the superior-electric power fiber laser which might be attained by coherent beam blend with M2 worth under 1.

On one other facet, the facility scaling on the NIR laser is yet another element to increase the regular ability on the 193-nm DUV laser. Due to lack of the substantial-power amplification Remedy of your NIR laser (for instance at 1553 nm), nonlinear frequency processes for instance optical parameter oscillation (OPO) might be applied to make a wavelength converter by shifting the wavelength from one μm get more info to the specified wavelength and also getting relative greater electric power [21]. Recently, a diamond Raman laser showed its capacity in obtaining a superior ability and a high conversion efficiency within the 1st Stokes of your one-μm laser [22,23], which implies the possibility to be utilized inside the 193-nm DUV laser generation thanks to its substantial Raman obtain and enormous frequency shift.

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The pulse length of the second Stokes light-weight was shortened to 5 ns as revealed in Figure 7a, a single-shot photo with the oscilloscope, that's a common phenomenon in Raman laser [44] though the heartbeat duration with the pump laser was 10 ns.

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