# Bistability and opto-thermal-pulsations in a quantum-dot edge-emitting laser

Alessio Tierno, Thorsten Ackemann

Research output: Contribution to journalConference Contribution

1 Citation (Scopus)

### Abstract

Self-sustained pulsations in the output of an InAs quantum dot laser diode in the MHz range are reported for the first time. The characteristics (shape, range and frequency) are presented for the free running laser and when optical feedback in the Littrow configuration is applied. The time scale suggest that these are
opto-thermal pulsation similar to those reported in quantum well amplifiers. Bistability in the light-current characteristics is observed for wavelengths smaller the gain peak ($\lambda = 1225$nm), but it is not present for wavelength above the gain peak and for the free running lasers.
Original language English 012092 Journal of Physics Conference Series 245 1 https://doi.org/10.1088/1742-6596/245/1/012092 Published - 2010

### Keywords

• optics
• lasers
• quantum dot
• multistability
• laser diodes

## NONLINEAR OPTICS AND LIGHT LOCALIZATION IN QUANTUM DOT

Ackemann, T.

EPSRC (Engineering and Physical Sciences Research Council)

1/01/0730/06/10

Project: Research