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External Optical Feedback Effects in Semiconductor Nanolasers
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DOI：10.1109/JSTQE.2015.2409984.png)
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Abstract
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The response of nanolasers subject to external optical feedback has been analyzed. Calculations have been performed using rate equations, which include the Purcell cavity-enhanced spontaneous emission factor F and the spontaneous emission coupling factor beta. In the analysis, the influence of F and beta is evaluated for varying distance from external mirror, current, and feedback rate. It is observed that, in general, increased F and beta at low bias currents increases the critical feedback for which chaos occurs as compared to conventional lasers, whereas at higher bias currents, chaos occurs at lower feedback rates. It is also found that for larger F, when increasing the distance from external mirror, the feedback rate at which chaos occurs increases.
Keywords:
Laser feedback
Chaos
Couplings
Optical feedback
Spontaneous emission
Mirrors
Semiconductor lasers
damping
relaxation oscillation
External optical feedback
Purcell Factor
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