Title :
Large S-section-ring-cavity diode lasers: directional switching, electrical diagnostics, and mode beating spectra
Author :
Hongjun Cao; Hai Ling; Chiyu Liu; Hui Deng;M. Benavidez;V.A. Smagley;R.B. Caldwell;G.M. Peake;G.A. Smolyakov;P.G. Eliseev;M. Osinski
Author_Institution :
Center for High Technol. Mater., Univ. of New Mexico, Albuquerque, NM, USA
Abstract :
Semiconductor lasers with monolithically integrated ring cavities exceeding 1 cm in perimeter were fabricated and characterized optically and electrically. Directional switching was observed, influenced by S-section seeding of unidirectional operation. The lasing threshold was identified by differential current-voltage measurements, which are also shown to be useful in monitoring directional switching. Mode beating was observed at three radio-frequency bands: 7.6, 15.2, and 22.9 GHz.
Keywords :
"Diode lasers","Ring lasers","Laser modes","Optical sensors","Optical waveguides","Current measurement","Monitoring","Optical losses","Space technology","Electric variables measurement"
Journal_Title :
IEEE Photonics Technology Letters
DOI :
10.1109/LPT.2004.840060
