The characteristics of a LD pumped intracavity Nd:YAG/KLu(WO4)2 Raman laser are studied. With a c-cut KLu(WO 4 ) 2 Raman crystal, a 2.5 W 1178 nm laser was obtained at an incident pump power of 12.4 W and a pulse repetition frequency of 25 kHz, the corresponding conversion efficiency from the pump laser to the Raman laser was 20.1%, which is comparable to the best results ever reported. With a bcut KLu(WO 4 ) 2 Raman crystal, 14 wavelengths were obtained, including the first to ninth order Stokes wavelengths for the 88 cm −1 Raman shift, the 1064 nm fundamental wavelength and other four wavelengths for the 757 cm −1 and 907 cmRaman shifts. This is the first time to obtain up to ninth order Stokes laser for the nanosecond pulse to our knowledge.Intensity, a.u.
An all-solid-state blue laser pumped Pr:KY 3 F 10 (Pr:KYF) laser at 610 nm has been demonstrated. With an incident pump power of 2.6 W, the maximum output power was 213 mW. Moreover, intracavity second-harmonic generation (SHG) has also been achieved with a maximum ultraviolet power of 11 mW by using a β-BaB2O4 (BBO) nonlinear crystal. To the best of our knowledge, this is the first report on continuous-wave ultraviolet generation by intracavity frequency doubling Pr:KYF laser. Output power at 610 nm, mW 0 50 100 150 200 Output power at 305 nm, mW 0 5 10 0 0.5 1.0 1.5 2.5 2.0 Incident pump power, W 610 nm 305 nmOutput powers at 610 and 305 nm versus pump power. Insetthe beam shape of ultraviolet laser at 305 nm
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