Bias-current dependence of anticorrelation polarization dynamics in vertical-cavity surface-emitting lasers with long external cavity

Abstract

The bias-current dependence of anticorrelation polarization dynamics in vertical-cavity surface-emitting lasers with long external cavity has been studied experimentally. With fixed optical feedback strength, the minimum cross-correlation coefficient exhibits exponential decay with the bias current. Strong anticorrelation is obtained at frequencies lower than 1GHz for all bias currents. Near the relaxation oscillation frequency good correlation is found at higher bias current but poor correlation is found at lower bias currents.