Work

Control of spontaneous emission coupling factor β in fiber-coupled microsphere resonators

Year: 2008

Type: article

Abstract: The spontaneous emission coupling factor β is studied for fiber-coupled microspheres with a thin gain layer of phosphorus codoped sol-gel erbium silica-aluminum glass. From the input-output characteristics of the lasing, β=0.039 is estimated for a sample with a gain layer on the sphere surface. β is estimated to increase to 0.19 when an additional silica glass thin layer is overcoated to improve the overlap between the gain layer and the optical mode of the lasing inside the sphere.

Source: Applied Physics Letters

DOI: 10.1063/1.2884329

Authors: Hideaki Takashima, Hideki Fujiwara, Shigeki Takeuchi, Keiji Sasaki, Masahide Takahashi

Institutions: Hokkaido University, Research Institute for Electronic Science, Hokkaido University, Kyoto University, Kyoto University Institute for Chemical Research

Language: English

Topic: Photonic and Optical Devices

Subfield: Electrical and Electronic Engineering

Field: Engineering

Domain: Physical Sciences

Open Access status: bronze

Funders: Japan Society for the Promotion of Science, Japan Science and Technology Agency

OpenAlex ID: W1978518698

FWCI: 3.009

Cites: 20

Cited by: 28

Related to: 10