New model of self-pulsating semiconductor lasers

GuangHua Duan; Guillaume Pham

doi:10.1117/12.316700

7 July 1998 New model of self-pulsating semiconductor lasers

GuangHua Duan, Guillaume Pham

Proceedings Volume 3283, Physics and Simulation of Optoelectronic Devices VI; (1998) https://doi.org/10.1117/12.316700
Event: Optoelectronics and High-Power Lasers and Applications, 1998, San Jose, CA, United States

Abstract

In this paper, a new model of self-pulsating semiconductor lasers (SPLs) is proposed based on the analogies between a SPL and a laser oscillator. In fact a SPL is first of all an oscillator even though it is difficult to identify amplifiers and feedback elements. The use of such analogies allows in some conditions to establish a very simple rate equation model of SPLs. One of the advantages of the model is the ability to analyze the injection locking properties of SPLs under external optical signal injection. In particular, it has been found that (1) the frequency looking range is directly proportional to the power ratio, (2) the spectral linewidth is equal to that of the incoming signal in the locking state. These points have been verified experimentally on a distributed feedback SPL. Nevertheless, a SPL is different from a laser in that the self-pulsation signal can be short pulses as well as sinusoidal. The short pulses nature means that there are higher order harmonics created by nonlinear effects related to the laser operation. These higher order harmonics can be taken into account in our new model, which becomes however more complex.

Citation Download Citation

GuangHua Duan and Guillaume Pham "New model of self-pulsating semiconductor lasers", Proc. SPIE 3283, Physics and Simulation of Optoelectronic Devices VI, (7 July 1998); https://doi.org/10.1117/12.316700

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