Title :
Effect of strong optical feedback on vertical-cavity surface-emitting lasers
Author :
Spencer, P.S. ; Mirasso, Claudio R. ; Shore, K. Alan
Author_Institution :
Wales Univ., UK
Abstract :
An analysis is performed of the effects of strong optical feedback on the characteristics of single-transverse mode VCSEL´s. Consideration is given to the cases of short (1.5 cm) and long (15 cm) external cavities. When the laser is operated well above threshold in a short external cavity with high reflectivity, a strong dependence on the accumulated external cavity phase is observed. Stable operation is found for an optimum phase while for other values of the phase, chaotic dynamics is observed. Such behavior is not seen near threshold where the laser output is stable for any accumulated phase. For the longer external cavity the influence of the phase term is found to be insignificant: chaotic behavior is seen in the output over a wide range of operating currents.
Keywords :
laser cavity resonators; 1.5 cm; 15 cm; accumulated external cavity phase; chaotic dynamics; high reflectivity; laser output; long external cavities; operating currents; optimum phase; short external cavities; single-transverse mode VCSEL; stable operation; strong optical feedback; threshold; vertical-cavity surface-emitting lasers; Chaos; Laser feedback; Laser modes; Optical devices; Optical feedback; Optical noise; Reflectivity; Semiconductor lasers; Surface emitting lasers; Vertical cavity surface emitting lasers;
Journal_Title :
Photonics Technology Letters, IEEE
