Abstract

Several schemes for optical pulses have been proposed so far, i.e., sideband injection locking of Fabry Perot lasers,¹ KF-driven two-mode DFB lasers² and optically filtered mode-locked lasers.³ Unfortunately those solutions lack continuous tunability. An almost ideal tunability is achieved by beating two independent laser diodes,⁴ but a major drawback is the poor linewidth characteristics of the beat note. CW-laser light injection into another cw-laser produces output power oscillations⁵ for frequency detunings outside the locking range. The method does not suffer from such disadvantages.

© 1996 Optical Society of America