Open AccessEvolution of multi-mode operation in vertical-external-cavity surface-emitting lasers
Author(s) -
Matthias Wichmann,
Mohammad Khaled Shakfa,
Fan Zhang,
Bernd Heinen,
Maik Scheller,
Arash RahimiIman,
W. Stolz,
Jerome V. Moloney,
S. W. Koch,
Martín Koch
Publication year - 2013
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.21.031940
Subject(s) - optics , laser , fabry–pérot interferometer , longitudinal mode , optical cavity , resonator , streak camera , interferometry , materials science , physics
The longitudinal multi-mode emission in a vertical-external-cavity surface-emitting laser is investigated using both single shot streak camera measurements and interferometric measurement techniques. For this, the laser is operated in the single- and two-color emission regime using both an etalon and a free-running configuration without etalon, respectively. The laser emission is analyzed with respect to pump power and output coupling losses for a long and for a short resonator. We observe a steep increase of emission bandwidth close to the laser threshold and monitor the transition between longitudinal single- and multi-mode operation. Additionally, the results indicate that a stable two-color operation is related to a sufficiently high number of oscillating longitudinal modes within each color.