Open AccessThreshold current temperature dependence of quantum-dot photonic crystal surface-emitting lasers with respect to gain-cavity detuning
Author(s) -
Min-Hsiang Hsu,
Gray Lin,
Zonglin Li,
Po-Chou Pan
Publication year - 2018
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.26.013483
Subject(s) - lasing threshold , materials science , optoelectronics , optics , photonic crystal , laser , quantum dot , quantum dot laser , semiconductor laser theory , spontaneous emission , wavelength , physics
We investigate threshold current temperature dependence of electrically injected quantum-dot (QD) photonic crystal (PC) surface-emitting lasers (SELs) with respect to wavelength detuning between QD gain peak and PC cavity resonance. The lasing emissions cover wavelengths from 1283 nm to 1318 nm. Almost infinite characteristic temperature is realized at certain temperature range for PCSEL with large negative gain-cavity detuning. Moreover, band-edge lasing mode is identified in our "PC slab-on-substrate" structure, and its far-field distribution is characterized as doughnut-shaped beam with azimuthal polarization.