Picture of flying drone

Award-winning sensor signal processing research at Strathclyde...

The Strathprints institutional repository is a digital archive of University of Strathclyde's Open Access research outputs. Strathprints provides access to thousands of Open Access research papers by University of Strathclyde researchers, including by Strathclyde researchers involved in award-winning research into technology for detecting drones. - but also other internationally significant research from within the Department of Electronic & Electrical Engineering.

Strathprints also exposes world leading research from the Faculties of Science, Engineering, Humanities & Social Sciences, and from the Strathclyde Business School.

Discover more...

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

Tierno, Alessio and Ackemann, Thorsten (2010) Bistability and opto-thermal-pulsations in a quantum-dot edge-emitting laser. Journal of Physics Conference Series, 245 (1). ISSN 1742-6588

Full text not available in this repository. (Request a copy from the Strathclyde author)

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.