Title :
Threshold gain temperature dependence of composite resonator vertical-cavity lasers
Author :
Lehman, Ann C. ; Choquette, Kent D.
Author_Institution :
Dept. of Electr. & Comput. Eng., Univ. of Illinois, Urbana, IL, USA
Abstract :
Vertical-cavity surface-emitting lasers (VCSELs) with two optically coupled but electrically isolated cavities form composite resonator vertical-cavity lasers (CRVCLs). These devices may lase at one of two wavelengths depending on the bias conditions to the two cavities and temperature. A model of the modal gain is presented, which explains the lasing wavelength at threshold based on the spatial and spectral overlap of the microcavity optical modes with the two gain regions.
Keywords :
laser modes; microcavity lasers; surface emitting lasers; thermo-optical effects; VCSEL; composite resonator lasers; electrically isolated cavities; microcavity optical modes; modal gain model; optical coupling; spatial overlap; spectral overlap; surface-emitting lasers; threshold gain temperature dependence; vertical-cavity lasers; Laser modes; Mirrors; Optical coupling; Optical resonators; Optical surface waves; Resonance; Surface emitting lasers; Temperature dependence; Threshold current; Vertical cavity surface emitting lasers; Coupled-cavity; threshold current; threshold gain; vertical-cavity surface-emitting laser (VCSEL);
Journal_Title :
Selected Topics in Quantum Electronics, IEEE Journal of
DOI :
10.1109/JSTQE.2005.853851
