Abstract

Continuous-wave (cw) optical parametric oscillators (OPOs) are widely tunable and highly coherent light sources in the near and mid infrared [1], They are of interest for many fundamental applications, such as e.g., ultrasensitive detection with quadrature-squeezed light [2] or quantum noise reduction in communication systems using twin beams [3], Such applications require, however, the reliable operation and precise frequency control of these devices. These requirements still remain a difficult challenge.

© 1996 Optical Society of America