Raman Amplification to Generate Picosecond Laser Pulses in a YVO4 Crystal
Y. Xu, M. Chen, C. Yang, L-Y. Chen, Y-L. Pan, M-L. Long and G. Li
We report the generation of high-order Stokes and anti-Stokes picosecond laser light by using an YVO4 Raman seed-amplifier system. This system can eliminate filametation induced by nonlinear effect. The two key elements for the system are seed-pump time synchronization and the incident angle between Raman seed and pump, which are studied in details. The result proves that Raman seed-amplifier system is a simple and practical way to get multi-wavelength picosecond lasers.
Keywords: YVO4 crystal, Solid state laser, picosecond laser pulse, Raman laser, Raman amplification, nonlinear optics, stimulated Raman scattering