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基于垂直腔面发射激光器(VCSEL)的自旋反转模型(SFM),研究了弱光反馈下正交时变光注入VCSEL的双稳特性。研究结果表明,当副激光器(S-VCSEL)受到主激光器(M-VCSEL)正交时变光注入时,弱光反馈的引入不改变正交时变光注入VCSEL的双稳宽度随光注入扫描速率增大而增大的性质;对于确定的光注入扫描速率,随着反馈强度的增大,双稳宽度将变窄;当M-VCSEL与S-VCSEL之间存在频率失谐Δν(等于νm-νs,νm、νs分别为主、副激光器自由运行时的频率)时,随着Δν从负值逐渐增加到正值,双稳宽度总体呈现先减小后增大的趋势,无反馈时在负频区域双稳环宽度呈现的较大波动在引入光反馈后可得到一定程度的抑制。
Based on the spin-inversion model (SFM) of vertical cavity surface emitting laser (VCSEL), the bistability of VCSEL implanted with orthogonal time-varying light under weak light feedback is studied. The results show that the introduction of low light feedback does not change the bistable width of the VCSEL implanted in the orthorhombic time domain with the light injection when the sub-laser (S-VCSEL) is changed by the orthogonal light of the main laser (M-VCSEL) The bistable width will be narrower with the increase of the feedback intensity for the determined optical injection scanning rate. When there is a frequency detuning Δν (equal to νm) between the M-VCSEL and the S-VCSEL, -vs, νm, νs, respectively, the frequency of the free-running secondary laser), as the Δν gradually increases from a negative value to a positive value, the bistable width generally decreases first and then increases, and when there is no feedback The large fluctuations in the width of the bistable loop in the negative-frequency region can be suppressed to a certain extent after the optical feedback is introduced.