Abstract

Diode-pumped, intracavity-doubled, unidirectional ring lasers are efficient sources of visible radiation.¹ Unidirectional lasing in the ring resonator eliminates spatial hole burning and allows stable intracavity generation of frequency-doubled radiation.² Stable unidirectional operation is paradoxical, since the nonlinear loss in the forward direction exceeds the calculated linear loss difference between the forward and reverse directions.

© 1995 Optical Society of America