Abstract

Semiconductor injection lasers are frequently operated in external cavities for spectral narrowing and mode stabilization, although the result can also be self-pulsations and chaos. External cavity lasers are also alignment-sensitive and are generally troublesome. Some of these difficulties may be alleviated using phase-conjugate external feedback, which can also produce phase-locking between lasers. It is therefore essential to study carefully the modal and dynamic properties of semiconductor lasers in the presence of phase-conjugate optical feedback.

© 1992 Optical Society of America