Abstract

Due to their inherently low frequency noise, small size and high reliability, monolithic diode-laser-pumped solid-state lasers are attractive sources for applications that require a high level of frequency stability, e.g. optical frequency standards, metrology, space-based measurements¹ and deep-space optical coherent communication¹. However, the long term drift of the laser frequency, typically at a rate of several MHz per minute, must be improved for those applications. By doubling the laser frequency and locking it to the Doppler-free absorption lines of the ¹²⁷I₂ molecule we have improved significantly the long term stability of the lasers, thus opening the possibility of using diode-laser-pumped solid-state lasers in these systems.

© 1992 Optical Society of America