Title :
Dynamic enhancement of semiconductor lasers in the present of coherent feedback
Author :
Ni, Tsang-Der ; Zhang, Xiangdong ; Daryoush, Afshin S.
Author_Institution :
Center for Microwave/Lightwove Engineering, E.C.E. Department, Drexel University, Philadelphia, PA 19104, USA. Tel: (215) 895-2914, Fax: (215) 497-9505
Abstract :
A harmonic conversion approach is presented for the enhancement of the dynamic of semiconductor laser. By efficient transfer of power to the desired harmonic of a directly modulated semiconductor laser diode, the modulation bandwidth will be extended. The focus of this study is a laser diode with an external cavity, of which the resonant frequency matches to the fourth harmonic of the modulation signal. The number of modes of the laser with optical feedback is increased as the external cavity modes matches up with the Fabry-Perot cavity modes. The experimental results show that the fourth harmonic is enhanced by ¿ 23dB from the case of without feedback.
Keywords :
Bandwidth; Diode lasers; Laser feedback; Laser modes; Masers; Optical feedback; Power engineering and energy; Power system harmonics; Resonant frequency; Semiconductor lasers;
Conference_Titel :
Microwave Conference, 1993. 23rd European
Conference_Location :
Madrid, Spain
DOI :
10.1109/EUMA.1993.336881
