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Based on the evidence-of-principle experiment, the conversion effectiveness of 23% implied the opportunity of achieving substantial-power at the second Stokes wavelength in the Raman laser. If the pump laser of 1078 nm could possibly be received at the common power of 50 W, the output electricity of its 2nd Stokes wavelength at 1512 nm could be in excess of 10 W. The design with the Raman laser cavity should be optimized in an effort to steer clear of the problems of your M1 and diamond area.

The normal power from the NIR laser continue to has the opportunity to become improved to tens of watts which include 70 W [26] Should the double-pass configuration could possibly be utilized for your Yb:YAG SCF amplifier phase. As a result, if the conversion performance of 31% from NIR to DUV can be nevertheless maintained at this higher ability affliction, the common output ability of your DUV laser at 258 nm may very well be in excess of twenty W, which would be a extraordinary ability stage for that DUV laser and result in the unanticipated DUV laser machining benefits. Furthermore, for high-electrical power DUV laser, the UV harm from the nonlinear crystal, including the windows for CLBO crystal as well as mirrors, is yet another crucial parameter for long lasting and steady Procedure.

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Due to the thermal lens impact in the reliable-state lasers, Should the heating administration is insufficient, it is not effortless to acquire the solid-point out laser by using a substantial electricity in addition to a high beam good quality at the same time. Recently, with the event of the thin disk laser and single-crystal fiber (SCF) laser, a significant-energy laser at the elemental wavelength (one μm) were understood with a superb beam high quality even with a TEM00 manner beam [4,24], which might be good candidates for the elemental of your DUV laser era. A further prospect for the fundamental may be the high-electricity fiber laser which could possibly be reached by coherent beam combination with M2 value below 1.

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Within the scientific and industrial programs, the beam quality of your DUV laser can also be a significant parameter. Specially, the beam good quality of the DUV laser dramatically impacts the laser machining results. The beam excellent in the DUV laser is determined by that of the basic laser as well as crystal to the frequency conversion. Just lately, a high-ability DUV laser (>ten W) at 258 nm was described using a beam top quality of M2 < 1.five, which was created by FHG of the Yb:YAG laser at 1030 nm using the CLBO crystal [13]. This laser would lead to a far better laser machining final result as compared to the former DUV lasers with much larger M2.

The heart beat duration of the next Stokes gentle was shortened to 5 ns as proven in Determine 7a, a single-shot image within the oscilloscope, that is a typical phenomenon in Raman laser [forty four] though the pulse period in the pump laser was ten ns.

Moreover, combining the reliable-point out laser with other nonlinear method for instance stimulated Raman scattering, NIR lasers could be attained at new wavelengths with significant power and large beam excellent, which was analyzed from the proof-of-theory experiment. This Raman click here laser plan delivers a new route to the higher-electrical power DUV laser, In particular within the wavelength of 193 nm.

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