Modeling Heat Mitigation in Hollow-Core Gas Fiber Lasers With Gas Flow

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Modeling_Heat_Mitigation_in_HollowCore_Gas_Fiber_Lasers_With_Gas_Flow.pdf (2.09 MB)

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https://ieeexplore.ieee.org/document/10621710

Permanent Link

https://doi.org/10.1109/JSTQE.2024.3430929
 http://hdl.handle.net/11603/35732

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UMBC Computer Science and Electrical Engineering Department
UMBC Faculty Collection

Author/Creator

Author/Creator ORCID

https://orcid.org/0000-0003-0269-8433

Date

2024-08-02

Type of Work

journal articles
Text

Department

Program

Citation of Original Publication

Zhang, Wei, Ryan A. Lane, Curtis R. Menyuk, and Jonathan Hu. “Modeling Heat Mitigation in Hollow-Core Gas Fiber Lasers With Gas Flow.” IEEE Journal of Selected Topics in Quantum Electronics 30, no. 6: Advances and Applications of Hollow-Core Fibers (November 2024): 1–8. https://doi.org/10.1109/JSTQE.2024.3430929.

Rights

This work was written as part of one of the author's official duties as an Employee of the United States Government and is therefore a work of the United States Government. In accordance with 17 U.S.C. 105, no copyright protection is available for such works under U.S. Law.
Public Domain

Subjects

UMBC Optical Fiber Communications Laboratory
compressible gas flow Fluid flow heat mitigation Heating systems Hollow-core fiber lasers Laser modes Laser theory Mathematical models Optical fibers Prevention and mitigation thermal dynamics

Abstract

We carry out a computational study to evaluate the temperature reduction by using gas flow in hollow-core gas fiber lasers. We first use the Navier-Stokes equations to study the gas flow in the hollow-core fibers. We compare the density, pressure, and velocity using both an incompressible and a compressible gas model. We show that an incompressible gas model leads to large errors in the case that we study in this paper. We then present a coupled model to study gas flow and heat transfer simultaneously in hollow-core fibers using a compressible gas model. We found that a temperature reduction of about 20% can be achieved by using a differential pressure of 10 atm between the inlet and outlet of the hollow-core fibers. The results also demonstrate that the relative temperature reduction increases when the heat power decreases, the fiber length decreases, and the heat profile is more localized.