Title :
The complex way to laser diode spectra: example of an external cavity laser strong optical feedback
Author :
Detoma, Enrico ; Tromborg, Bjarne ; Montrosset, Ivo
Author_Institution :
Dipt. di Elettronica e PhotonLab, Politecnico di Torino, Italy
Abstract :
An external cavity laser with strong grating-filtered feedback to an antireflection-coated facet is studied with a time-domain integral equation for the electric field, which reproduces the modes of the oscillation condition as steady-state solutions. For each mode, the stability and spectral behavior is determined by analysis of the location of side modes in the complex frequency plane. The complex frequency diagrams are shown to be a useful tool to determine the self-stabilization effect of mode coupling and its dependence on laser parameters and external cavity design. The model is used to simulate the large signal time evolution after start from unstable modes.
Keywords :
antireflection coatings; diffraction gratings; laser cavity resonators; laser feedback; laser frequency stability; laser modes; semiconductor device models; semiconductor lasers; antireflection-coated facet; complex frequency diagrams; complex frequency plane; external cavity design; external cavity laser; grating-filtered feedback; large signal time evolution; laser diode spectra; laser model; laser parameters; mode coupling; oscillation condition modes; self-stabilization effect; side modes; spectral behavior; stability; steady-state solutions; strong optical feedback; time-domain integral equation; unstable modes; Diode lasers; Frequency; Gratings; Integral equations; Laser feedback; Laser modes; Optical feedback; Stability analysis; Steady-state; Time domain analysis;
Journal_Title :
Quantum Electronics, IEEE Journal of
DOI :
10.1109/JQE.2004.839705
