Abstract
Certain applications of diode lasers, such as coherent optical communication1 and laser cooling of atoms,2 place rigid constraints upon the spectral purity and frequency stability of the laser's emission. Narrow-band optical feedback is an effective method of reducing the linewidth and stabilizing the frequency of diode lasers. Previously, a separate confocal Fabry-Perot resonator was successfully used to reduce the linewidth and stabilize the frequency of a semiconductor laser.3
© 1991 Optical Society of America
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