Azimuthally Polarized Radial Emission from a Quantum Dot Fiber Laser

Azimuthally Polarized Radial Emission from a Quantum Dot Fiber Laser

We demonstrate an azimuthally polarized radial emission with zero angular momentum from a CdSe/CdZnS/ZnS quantum dot (QD) fiber laser. This fiber laser is realized by axially pumping the QD-doped gain plug infiltrated in the hollow cavity of a multilayer photonic band-gap fiber. The cylindrically sy...

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Bibliographic Details
Main Authors: Zhang, Nan, Liu, He, Stolyarov, Alexander M., Zhang, Ting, Li, Kaiwei, Shum, Perry Ping, Fink, Yoel, Sun, Xiao Wei, Wei, Lei
Other Authors: School of Electrical and Electronic Engineering
Format: Article
Language:English
Published: 2017
Subjects:
Quantum dots
Fiber laser
Online Access:https://hdl.handle.net/10356/81402
http://hdl.handle.net/10220/43457
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Institution: Nanyang Technological University
Language: English
Description
Summary:We demonstrate an azimuthally polarized radial emission with zero angular momentum from a CdSe/CdZnS/ZnS quantum dot (QD) fiber laser. This fiber laser is realized by axially pumping the QD-doped gain plug infiltrated in the hollow cavity of a multilayer photonic band-gap fiber. The cylindrically symmetric radial emission is registered as a perfect ring-shaped pattern in the far field. The lasing threshold is measured to be ∼238 μJ/pulse, and the quality factor is calculated to be ∼4000. The unique radial emission from the resulting QD fiber laser offers a fundamental solution for the development of omnidirectional displays and light sources for biomedical analysis and phototherapy with minimal invasion.

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