Abstract

Frequency stabilized diode lasers are required for optical communications, laser spectroscopy, and remote sensing. Two conventional techniques for frequency stabilization are optical feedback and optoelectronic feedback. Optical feedback is achieved by use of a partially transmitting mirror, which creates an external cavity diode laser system. A frequency selective element, such as an étalon, a birefringent tuner, or an interference filter, placed in an external cavity will provide frequency stabilization and linewidth reduction of the diode laser. Optoelectronic feedback requires complex electronics to stabilize the laser diode.

© 1992 Optical Society of America