Title :
Selective excitation of lowest-order axial and ring modes in confocal quasi-stadium laser diodes
Author :
Fukushima, Takehiro ; Sunada, Satoshi ; Harayama, Takahisa ; Sakaguchi, Koichiro ; Tokuda, Yasunori
Author_Institution :
Dept. of Commun. Eng., Okayama Prefectural Univ., Okayama, Japan
Abstract :
We fabricated and investigated two confocal quasi-stadium laser diodes: one has a narrow electrode contact pattern along its cavity axis and the other has a narrow electrode contact pattern along a diamond-shaped trajectory. The lowest-order axial and ring modes were selectively excited. The resonator modes of the laser diodes were calculated using the extended Fox-Li mode calculation method. Although some deformation of the far-field emission pattern was observed in experiments, the numerically calculated far-field emission patterns agree well with the experimentally observed far-field patterns.
Keywords :
diamond; electrodes; laser cavity resonators; laser modes; semiconductor lasers; axial mode; cavity axis; confocal quasi-stadium laser diodes; diamond-shaped trajectory; electrode contact pattern; extended Fox-Li mode calculation method; far-field emission pattern; resonator modes; ring mode; selective excitation; Cavity resonators; Diode lasers; Electrodes; Laser modes; Optical resonators; Semiconductor lasers; Trajectory; extended Fox-Li mode calculation method; laser diodes; lowest-order modes; quasi-stadium cavity; resonator modes;
Conference_Titel :
Transparent Optical Networks (ICTON), 2011 13th International Conference on
Conference_Location :
Stockholm
Print_ISBN :
978-1-4577-0881-7
Electronic_ISBN :
2161-2056
DOI :
10.1109/ICTON.2011.5971049
