Passively Q-switched vectorial fiber laser modulated by hybrid organic-inorganic perovskites

We report a passively Q-switched Yb-doped vectorial fiber laser based on hybrid organic-inorganic perovskites (HOIPs) CH3NH3PbI3. The nonlinear absorption properties of CH3NH3PbI3 have been investigated based on the open-aperture Z-scan technique. With the HOIPs pulse modulator, the passively Q-switched cylindrical vector beam can be generated with the shortest pulse width 919 ns, pulse repetition frequency 36.4 kHz, and pulse energy 0.77 mu J, respectively. Furthermore, the radial and azimuthal polarization pulse beam can be obtained and switched by controlling the intra-cavity polarization. (C) 2017 Optical Society of America