Dynamical regimes of multi-stripe laser array with external off-axis feedback
- Pimenov, Alexander
- Tronciu, Vasile Z.
- Bandelow, Uwe
- Vladimirov, Andrei G.
2010 Mathematics Subject Classification
- 78A60 37M05 78A45 34K60
2008 Physics and Astronomy Classification Scheme
- 42.55.Px 42.60.Mi 42.60.Da 42.55.Sf
- Broad-area semiconductor lasers, multi-stripe laser array, off-axis feedback, delay differential equations, bifurcation analysis
We study theoretically the dynamics of a multistripe laser array with an external cavity formed by either a single or two off-axis feedback mirrors, which allow to select a single lateral mode with transversely modulated intensity distribution. We derive and analyze a reduced model of such an array based on a set of delay differential equations taking into account transverse carrier grating in the semiconductor medium. With the help of the bifurcation analysis of the reduced model we show the existence of single and multimode instabilities leading to periodic and irregular pulsations of the output intensity. In particular, we observe a multimode instability leading to a periodic regime with anti-phase oscillating intensities of the two counter-propagating waves in the external cavity. This is in agreement with the result obtained earlier with the help of a 2+1 dimensional traveling wave model.
- J. Opt. Soc. Amer. B Opt. Phys., 30 (2013) pp. 1606--1613.