We have experimentally studied modal dynamics of a vertical-cavity surface-emitting laser (VCSEL) above the threshold of higher-order transverse modes when the VCSEL is subject to isotropic optical feedback. The dynamics of the higher-order mode reveals resemblance to the so-called low-frequency fluctuation (LFF) and the transition from LFF to coherence collapse near the threshold of single-transverse-mode VCSEL. Influence of control parameters on the dynamics is investigated, and possible mechanism of the dynamics is discussed.
© 2010 Optical Society of America
Lasers and Laser Optics
Original Manuscript: April 26, 2010
Revised Manuscript: August 20, 2010
Manuscript Accepted: August 21, 2010
Published: October 18, 2010
Hong Lin, Erik G. Born, Nola J. Palombo, and Angel Valle, "Modal dynamics above the threshold of higher-order transverse modes in a vertical-cavity surface-emitting laser with isotropic optical feedback," J. Opt. Soc. Am. B 27, 2304-2312 (2010)