First-Stokes Raman Lasers Based On Znwo4/Nd: Yag

In this work, a first-Stokes Raman lasers based on ZnWO4/Nd:YAG was constructed for the first time. The output characteristics of the lasers under different repetition frequencies and with different output couplers were studied. Using ZnWO4 crystal as the Raman crystal and diode-pumped Nd: YAG crystal to produce the fundamental laser, the first -Stokes laser at 1177.6 nm was realized. A maximum average output power of 886 mW at the firstStokes wavelength of 1177. 6 nm is obtained for output coupling mirror transmittance of 35%, pump power of 22.1 W, and repetition frequency of 9 kHz. Moreover, the corresponding pulse width and output peak power arc 2.2 ns and 43.9 kW, respectively.