All-sound-point out ultraviolet lasers are actually broadly Employed in the fields of mechanical flaw detection, lithography, micromachining and medication for the benefits of modest volume, lengthy existence, high performance, superior beam good quality, broad tuning and slim spectral line, and so forth. Using superior power close to-infrared coherent light supply as the fundamental frequency supply based upon nonlinear tuning technology, generating ultraviolet coherent radiation by multistage frequency conversion is considered to be a vital approach to build the ultraviolet coherent light resource.

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In accordance with the proof-of-principle experiment, the conversion effectiveness of 23% implied the potential of obtaining high-energy at the next Stokes wavelength of your Raman laser. When the pump laser of 1078 nm can be obtained at the typical electricity of 50 W, the output energy of its 2nd Stokes wavelength at 1512 nm might be greater than ten W. The design in the Raman laser cavity needs to be optimized so as to stay away from the harm of the M1 and diamond floor.

The average energy of the NIR laser continue to has the likely for being improved to tens of watts such as 70 W [26] If your double-pass configuration can be utilized for your Yb:YAG SCF amplifier stage. As a result, If your conversion efficiency of 31% from NIR to DUV could be however taken care of at this higher electric power problem, the common output ability in the DUV laser at 258 nm can be more than 20 W, which might be described as a outstanding electrical power amount for that DUV laser and bring about the unanticipated DUV laser machining effects. Additionally, for high-electrical power DUV laser, the UV destruction of the nonlinear crystal, such as the windows for CLBO crystal along with the mirrors, is yet another vital parameter for lasting and stable Procedure.

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LBO is also a superb nonlinear crystal which is usually placed on the SHG from your NIR to your inexperienced. The DUV laser is usually understood by two levels of SFG within the LBO crystals considering that there is no stage-matching angle for LBO to convert the eco-friendly laser at 515 nm or 532 nm on the DUV specifically by SHG [sixteen]. A short while ago, the NSBBF crystal has also shown its probable to obtain a higher conversion performance from 532 nm to 266 nm. The stroll-off angle and deff of your NSBBF are Nearly much like People of CLBO [17].

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The heart beat length of the 2nd Stokes gentle was shortened to 5 ns as proven in Determine 7a, only one-shot picture from your oscilloscope, which is a standard phenomenon in Raman laser [44] whilst the pulse length of your pump laser was 10 ns.

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