Expand this Topic clickable element to expand a topic
Skip to content
Optica Publishing Group

Single-transverse-mode waveguide-coupled deformed hexagonal resonator microlasers

Not Accessible

Your library or personal account may give you access

Abstract

AlGaInAs/InP waveguide-coupled deformed hexagonal resonator microlasers with enhanced mode quality (Q)-factors are demonstrated for realizing single-transverse-mode operation. A circular hole is introduced to the center of the hexagonal resonators with rounded corners to enhance the mode Q-factors and suppress high-order transverse modes simultaneously. Single-mode lasing with side-mode suppression ratios up to 40 dB is obtained for the 10-μm-sidelength hexagonal microlasers with a center hole. All the lasing spectra demonstrate pure single-transverse-mode properties within the whole tuning range of injection current, and mode hopping with one, two, and three longitudinal-mode intervals is observed due to the mode Q-factor modification by the center holes. To further reduce the device size and threshold current, the deformed hexagonal resonator microlasers with the flat sides replaced by circular arcs are analyzed and demonstrated experimentally. The Q-factors of the fundamental transverse modes can be enhanced by two orders of magnitude due to the convergence effect of the circular sides by optimizing the deformation amplitude, while the single-transverse-mode property is still maintained. A threshold current of 2.4 mA is realized for a circular-side hexagonal microlaser with the side length of 8.5 μm and the deformation amplitude of 0.55 μm.

© 2018 Optical Society of America

Full Article  |  PDF Article
More Like This
Spectral engineering for circular-side square microlasers

Hai-Zhong Weng, Yue-De Yang, Jin-Long Xiao, You-Zeng Hao, and Yong-Zhen Huang
Opt. Express 26(8) 9409-9414 (2018)

Wide-angle emission and single-mode deformed circular microlasers with a flat side

Jian-Dong Lin, Ling-Xiu Zou, Yong-Zhen Huang, Yue-De Yang, Qi-Feng Yao, Xiao-Meng Lv, Jin-Long Xiao, and Yun Du
Appl. Opt. 51(17) 3930-3935 (2012)

Mode selection in square resonator microlasers for widely tunable single mode lasing

Ming-Ying Tang, Shao-Shuai Sui, Yue-De Yang, Jin-Long Xiao, Yun Du, and Yong-Zhen Huang
Opt. Express 23(21) 27739-27750 (2015)

Cited By

You do not have subscription access to this journal. Cited by links are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Figures (7)

You do not have subscription access to this journal. Figure files are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Select as filters


Select Topics Cancel
© Copyright 2024 | Optica Publishing Group. All Rights Reserved