All-reliable-point out ultraviolet lasers are actually greatly Employed in the fields of mechanical flaw detection, lithography, micromachining and medication for the benefits of modest volume, lengthy lifestyle, substantial effectiveness, great beam high quality, wide tuning and slim spectral line, and so on. Utilizing higher energy in close proximity to-infrared coherent gentle source as the basic frequency resource determined by nonlinear tuning technological innovation, generating ultraviolet coherent radiation by multistage frequency conversion is viewed as an important strategy to develop the ultraviolet coherent gentle resource.

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In accordance with the evidence-of-principle experiment, the conversion efficiency of 23% implied the potential for acquiring superior-ability at the second Stokes wavelength of the Raman laser. In the event the pump laser of 1078 nm may very well be attained at the standard power of 50 W, the output energy of its 2nd Stokes wavelength at 1512 nm could possibly be over 10 W. The look with the Raman laser cavity really should be optimized so that you can stay away from the hurt in the M1 and diamond surface.

For illustration, The existing concave OC could be replaced by a plane mirror which could mitigate the facility density about the surface area of M1 and also the diamond. Moreover, employing large harm threshold coatings for M1 and diamond would also Increase the output electrical power with none damages. Then, the NIR laser on the 2nd Stokes wavelength could be significant adequate, and its excellent beam quality, to make the ultimate DUV laser at 193 nm using a significant average electricity.

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Mainly because of the thermal lens influence while in the sound-state lasers, Should the heating management is inadequate, It's not necessarily effortless to get the sound-condition laser having a high electric power as well as a superior beam good quality at the same time. Not too long ago, with the event of The skinny disk laser and single-crystal fiber (SCF) laser, a significant-electrical power laser at the basic wavelength (1 μm) were understood with a great beam good quality Despite having a TEM00 manner beam [4,24], which would be great candidates for the basic on the DUV laser era. A different candidate for the fundamental would be the superior-power fiber laser which might be attained by coherent beam mixture with M2 value less than one.

On one other aspect, the power scaling from the NIR laser is yet another facet to boost the common electrical power from the 193-nm DUV laser. Because of the not enough the substantial-electrical power amplification solution with the NIR laser (as an example at 1553 nm), nonlinear frequency procedures including optical parameter oscillation (OPO) can be applied to produce a wavelength converter by shifting the wavelength from 1 μm to the specified wavelength and obtaining relative better energy [21]. Just lately, a diamond Raman laser confirmed its capability in obtaining a superior energy as well as a significant conversion performance within the 1st Stokes in the 1-μm laser [22,23], which suggests the likelihood being used during the 193-nm DUV laser technology because of its high Raman gain and enormous frequency change.

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The heartbeat duration of the next Stokes light was shortened to five ns as proven in Determine 7a, an individual-shot picture within the oscilloscope, that's a typical phenomenon in Raman laser [44] even though the pulse length of your pump laser was 10 ns.

Also, combining the good-state laser with other nonlinear course of action such as stimulated Raman scattering, NIR lasers may very well be achieved at new wavelengths with large electric power and high beam top quality, which was examined because of the evidence-of-basic principle experiment. This Raman laser plan delivers a completely new path to the superior-power DUV laser, Particularly on the wavelength of 193 nm.

Tunable ultraviolet laser source depending on reliable-condition dye laser technologies and CsLiB6O10 harmonic generation

Its UV absorption edge reaches a hundred and eighty nm. The productive nonlinear optical coefficient of CLBO for frequency doubling at 1064nm is about two times as big as that of KDP. CLBO crystals can be click here developed from your stoichiometric soften with decrease viscosity.

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