title: Correlation properties and drift phenomena in the dynamics of vertical-cavity surface-emitting lasers with optical feedback.
abstract: We investigate experimentally the polarization dynamics of vertical-cavity surface-emitting lasers with isotropic optical feedback operating in the long-cavity regime. By means of an analysis of the correlation properties in the time domain and in the frequency domain a connection between a drift phenomenon and frequency components that deviate from the harmonics of the external cavity round-trip frequency is revealed. The latter frequency components are shown to result from an interaction of external cavity dynamics and relaxation oscillations. An analogy to the carrier-envelope effect in mode-locked lasers is drawn. Similar drift phenomena are observed also for other laser systems with delay.
authors.forename: Markus
authors.initials: M
authors.lastname: Sondermann
authors.forename: Thorsten
authors.initials: T
authors.lastname: Ackemann