Numerical analysis of spontaneous mid-infrared light emission from terbium ion doped multimode chalcogenide fibers

Slawomir Sujecki,Lukasz Sojka,Elzbieta Pawlik,Krzysztof Anders,Ryszard Piramidowicz,Zhuoqi Tang,David Furniss,Emma Barney,Trevor Benson,Angela Seddon

doi:10.1016/j.jlumin.2018.03.031

Abstract

In this contribution we use a numerical model to study the photoluminescence emitted by Tb3+ doped chalcogenide-selenide glass fibers pumped by laser light at approximately 3 µm. The model consists of the set of ordinary differential equations (ODEs), which describe the spatial evolution of the pump laser and MIR photoluminescence light within the fiber. The ODEs are coupled with the rate equations that describe the energy level populations. A self-consistent solution of the equation system yields the pump light, MIR photoluminescence and level population distribution within the fiber. Using the developed model we numerically calculate results and discuss the dependence of the output photoluminescence MIR power on the fiber optical loss, fiber length and pump wavelength.

Highlights

Mid-infrared (MIR) light has many applications in the field of medicine, environment monitoring, biology and defense [1,2,3]
The key to success of this technology is the availability of lanthanide ion doped chalcogenide glass fibers with good optical properties within the mid infrared wavelength range
An important element of the development of MIR spontaneous emission fiber sources is modelling and design. In this contribution we derive a numerical model for the analysis of the MIR photoluminescence emitted by Tb3+ doped chalcogenide-selenide glass fibers pumped by laser light at approximately 3 m

Summary

Introduction

Mid-infrared (MIR) light has many applications in the field of medicine, environment monitoring, biology and defense [1,2,3]. Laser light pumped, lanthanide doped chalcogenide glass fibers spontaneous emission sources have been demonstrated as one of possible solutions to this problem [3,4,5,6]. The key to success of this technology is the availability of lanthanide ion doped chalcogenide glass fibers with good optical properties within the mid infrared wavelength range. An important element of the development of MIR spontaneous emission fiber sources is modelling and design In this contribution we derive a numerical model for the analysis of the MIR photoluminescence emitted by Tb3+ doped chalcogenide-selenide glass fibers pumped by laser light at approximately 3 m. Using the developed model we numerically calculate results and discuss the dependence of the output photoluminescence MIR power on the fiber optical loss, fiber length and pump wavelength

Methods

Results

Conclusion