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In accordance with the proof-of-principle experiment, the conversion effectiveness of 23% implied the potential for reaching substantial-electrical power at the next Stokes wavelength on the Raman laser. If your pump laser of 1078 nm could be obtained at the average power of 50 W, the output ability of its 2nd Stokes wavelength at 1512 nm can be more than ten W. The design from the Raman laser cavity really should be optimized so that you can steer clear of the destruction of your M1 and diamond area.

The real key trouble of ultraviolet coherent mild supply predominantly focuses on the development of nonlinear optical frequency conversion crystal in ultraviolet band. The nonlinear optical crystal is without doubt one of the circumstances for frequency transformation, so The expansion, sizing, harm resistance, conversion efficiency and allowable parameter selection of nonlinear optical crystal are needed An increasing number of.

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LBO is usually a fantastic nonlinear crystal which is often placed on the SHG in the NIR on the environmentally friendly. The DUV laser is generally realized by two phases of SFG within the LBO crystals considering that there is not any period-matching angle for LBO to transform the eco-friendly laser at 515 nm or 532 nm to your DUV straight by SHG [16]. Just lately, the NSBBF crystal has also demonstrated its probable to acquire a significant conversion performance from 532 nm to 266 nm. The stroll-off angle and deff from the NSBBF are almost comparable to Those people of CLBO [seventeen].

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From the scientific and industrial programs, the beam high quality of the DUV laser is usually a significant parameter. Specifically, the beam quality with the DUV laser substantially affects the laser machining effects. The beam good quality of the DUV laser is set by that of the elemental laser as well as the crystal for that frequency conversion. Just lately, a substantial-power DUV laser (>ten W) at 258 nm was reported that has a beam quality of M2 < one.5, which was generated by FHG of the Yb:YAG laser at 1030 nm utilizing the CLBO crystal [13]. This laser would bring on a much better laser machining final result as compared to the earlier DUV lasers with larger sized M2.

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The beam profile shown in Determine 7b shown a great beam good quality as one of several merits of Raman laser, which might be useful to create a 193-nm DUV laser with a top quality beam.

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