Dynamics of vertical-cavity surface-emitting laser subject to optical injection and positive optoelectronic feedback
光注入和光电反馈联合作用下垂直腔表面 发射激光器的动力学特性研究

Based on the spin-flip model(SFM),we theoretically investigate the dynamics of a vertical-cavity surface-emitting laser(VCSEL) subject to optical injection and positive optoelectronic feedback.The results show that under the joint action of positive optoelectronic feedback and optical injection from a master VCSEL(M-VCSEL),two polarization modes of a slave VCSEL(S-VCSEL) will show many dynamic states such as period one,period two,multi-period and chaos,and the evolution routes of these states are different for two polarization modes.Mapping of dynamic region as a function of feedback strength / and injection strength 77 is varied with frequency detuning between M-VCSEL and S-VCSEL△v(△v = v_m - v_s,where v_m and v_s are the free-running frequencies of M-VCSEL and S-VCSEL,respectively).Compared with the case for zero or negative frequency detuning,the region of chaotic state is expanded significantly under positive△v.For a fixed△v,the influences of f andηon the chaotic bandwidth of S-VCSEL are discussed.Through selecting proper f andη,chaotic bandwidth of S-VCSEL can be improved obviously.