Abstract
By using a doubly passively Q-switched Nd:Gd3Ga5O12(Nd:GGG) laser with Cr4+:YAG and GaAs as saturable absorbers as pump laser, simultaneous intracavity optical parametric oscillation and stimulated Raman scattering based on a single X-cut KTiOPO4 (KTP) crystal have been realized. Under an incident diode pump power of 10.5 W, the output powers at the signal wave near 1,569 nm and the first Stokes emission near 1,094 nm were 218 and 72 mW, corresponding to the optical-to-optical conversion efficiencies of 2.08 and 0.69 %, respectively. The measured shortest pulse duration at the signal wave near 1,569 nm was 580 ps, generating a pulse peak power of 43.7 kW, while the minimum pulse duration at the first Stokes emission near 1,094 nm was 1.61 ns. By adjusting the tilt angle of the KTP crystal, up to the third Stokes scattering was also obtained.
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Acknowledgments
This work is partially supported by the National Natural Science Foundation of China (61378022), the National Natural Science Foundation of China for Youths (61205145) and the Fundamental Research Funds of Shandong University (2014JC032).
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Chu, H., Zhao, J., Li, Y. et al. Simultaneous intracavity optical parametric oscillation and stimulated Raman scattering pumped by a doubly passively Q-switched Nd:GGG laser. Appl. Phys. B 117, 869–873 (2014). https://doi.org/10.1007/s00340-014-5901-3
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DOI: https://doi.org/10.1007/s00340-014-5901-3