Effects of optical feedback with dispersive loss on the amplitude noise and relaxation resonance of semiconductor lasers

John E. Kitching; Richard Boyd; Amnon Yariv; Yaakov Shevy

doi:10.1117/12.178520

30 June 1994 Effects of optical feedback with dispersive loss on the amplitude noise and relaxation resonance of semiconductor lasers

John E. Kitching, Richard Boyd, Amnon Yariv, Yaakov Shevy

Author Affiliations +

Proceedings Volume 2146, Physics and Simulation of Optoelectronic Devices II; (1994) https://doi.org/10.1117/12.178520
Event: OE/LASE '94, 1994, Los Angeles, CA, United States

Abstract

Optical feedback from an external cavity containing an element of dispersive loss was used to reduce the amplitude noise of a semiconductor laser. At feedback levels of P_fb/P_out approximately equals 10+-2), a maximum amplitude noise reduction of 16 decibel was measured close to threshold but the potiential for reduction was reduced considerably at higher injection currents as the laser noise approached the shot noise limit. In addition, the threshold current decreased and the linewidth was reduced to 10 kilohertz. The relaxation oscillation peak in the amplitude noise spectrum was also found to be dramatically suppressed and we find evidence that the relaxation resonance can be moved to much higher frequencies using optical feedback techniques.

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John E. Kitching, Richard Boyd, Amnon Yariv, and Yaakov Shevy "Effects of optical feedback with dispersive loss on the amplitude noise and relaxation resonance of semiconductor lasers", Proc. SPIE 2146, Physics and Simulation of Optoelectronic Devices II, (30 June 1994); https://doi.org/10.1117/12.178520

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