Work

Directional emission with super narrow divergence from perforated elliptical microdisk

Year: 2024

Type: article

Abstract: In this work, a perforated polymeric elliptical microcavity is investigated by using the finite difference time domain (FDTD) method, highly directional laser emission with a far-field divergence angle of 2.57°, which is achieved without spoiling Q much. Further simulation analyses reveal that the far-field profile is insensitive to the deformation parameter of the hole, demonstrating the device is robust. In addition, the position of the hole and deformation parameter of the elliptical microcavity is vital for optimizing the far-field profile. Our work has provided an effective way to achieve directional whispering gallery mode emission with super narrow divergence, which will be important in integrated optics, optical communication and biochemical sensing.

Source: Optics Express

DOI: 10.1364/oe.540431

Authors: Yuchen Wang, Shuo Liu, Xiuxian Qian, Rui Hou, Xiuhua Wang

Institution: Qingdao University of Technology

Language: English

Topic: Photonic and Optical Devices

Subfield: Electrical and Electronic Engineering

Field: Engineering

Domain: Physical Sciences

Open Access status: gold

Estimated APC paid: $2,270

Funder: Natural Science Foundation of Shandong Province