Eur. Phys. J. Appl. Phys. 27, 455-459 (2004)
https://doi.org/10.1051/epjap:2004059

Imaging of spontaneous emission from 980 nm tapered lasers with windowed N-contacts

¹ School of Electrical and Electronic Engineering, University of Nottingham, Nottingham, NG7 2RD, UK
² A.F. Ioffe Physical Technical Institute, 26 Politehnicheskaya, St. Petersburg, 194021, Russia
³ Departamento de Tecnología Fotónica, Universidad Politécnica de Madrid, 28040 Madrid, Spain
⁴ THALES Research & Technology, Domaine de Corbeville, 91404 Orsay Cedex, France

Corresponding author: steve.bull@nottingham.ac.uk

Received: 9 July 2003
Accepted: 18 December 2003
Published online: 15 July 2004

Abstract

Experimental measurements of the spatial distribution of the spontaneous emission produced inside the cavity of a 4° 980 nm tapered laser are presented and compared with the results of a 2.5 D half-space, hot-cavity simulation. A custom device with a windowed n-contact was designed and fabricated for this work. The effectiveness of this windowed contact was investigated and appears to be satisfactory. The measurement system for photo- and electroluminescence microscopy imaging was quantitatively calibrated with an error of < ±15%. Good agreement between the experimental and simulated results are presented, with an error of ~ 6% in the carrier density at the output facet.