Open AccessMulti-wavelength microresonator based on notched-elliptical polymer microdisks with unidirectional emission
Author(s) -
Xiaoming Ma,
Heming Wei,
Shuzhen Fan,
Abhishek K. Amrithanath,
Jiaxiong Fang,
Sridhar Krishnaswamy
Publication year - 2020
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.397372
Subject(s) - whispering gallery wave , lasing threshold , optics , wavelength , resonator , materials science , optoelectronics , q factor , near and far field , whispering gallery , photonics , physics
A three-dimensional notched-elliptical microdisk with a wavelength-size notch on the boundary is proposed as a multi-wavelength and unidirectional emission lasing source. The device contains multiple properly designed two-dimensional whispering gallery mode-based polymer notched microdisks with different dimensions for use as a multi-wavelength source. It can have a relatively high optical quality factor of 4000, unidirectional emission with low far-field divergence ∼4°, and the efficiency of emission is as high as 84.2%. The effect of the notch size on the far-field divergence is analyzed, and the multi-wavelength lasing performance is characterized, demonstrating that the resonator is robust and reliable. This work paves a unique but generic way for the design of compact multi-wavelength microlasers.