Abstract

Mode characteristics are experimentally and numerically investigated for the AlGaInAs/InP microcylinder lasers with radii $R$ ranging from 3.25 to 5.5 μm. The measured lasing spectra suggest wavelength crossing between different radial-order modes at $R=3.5\mathrm{\mu m}$, and the threshold current dramatically increases as $R<3.5\mathrm{\mu m}$, which can be well explained by three-dimensional finite-difference time-domain simulation. The simulated mode $Q$ factors greatly degrade in the microcylinder resonators as $R<3.5\mathrm{\mu m}$ and strongly depend on the mode wavelength because of vertical radiation loss, which results in a limitation for low threshold lasing. In addition, the near coincidence of mode wavelengths for different radial modes indicates the possible mode coupling at $R=3.5\mathrm{\mu m}$.

© 2015 Optical Society of America

Analysis of vertical radiation loss and far-field pattern for microcylinder lasers with an output waveguide

Xiao-Meng Lv, Yong-Zhen Huang, Yue-De Yang, Heng Long, Ling-Xiu Zou, Qi-Feng Yao, Xin Jin, Jin-Long Xiao, and Yun Du
Opt. Express 21(13) 16069-16074 (2013)

Mode characteristics for unidirectional-emission microring resonator lasers

Xiu-Wen Ma, Xiao-Meng Lv, Yong-Zhen Huang, Yue-De Yang, Jin-Long Xiao, and Yun Du
J. Opt. Soc. Am. B 31(11) 2773-2778 (2014)

Thermal and high speed modulation characteristics for AlGaInAs/InP microdisk lasers

Ling-Xiu Zou, Yong-Zhen Huang, Bo-Wen Liu, Xiao-Meng Lv, Xiu-Wen Ma, Yue-De Yang, Jin-Long Xiao, and Yun Du
Opt. Express 23(3) 2879-2888 (2015)

Mode characteristics of subwavelength aluminum/silica-coated InAlGaAs/InP circular nanolasers

Chu-Cai Guo, Jin-Long Xiao, Yue-De Yang, and Yong-Zhen Huang
J. Opt. Soc. Am. B 31(4) 865-872 (2014)

Design of quantum cascade microcavity lasers based on Q factor versus etching depth

Jing Li, Yue-De Yang, and Yong-Zhen Huang
J. Opt. Soc. Am. B 26(8) 1484-1491 (2009)