Asymmetric Steady Thermal Blooming
Document Type
Article
Publication Date
4-28-2025
Abstract
The thermal blooming of a thulium laser near 2 µm in an enclosed chamber is considered, as in Cook et al. [Opt. Laser Technol. 146, 107568 (2022)]. The problem is modeled using the paraxial equation for the laser and the Navier–Stokes equations with a Boussinesq approximation for buoyancy-driven effects. These equations are solved numerically in the steady experimental configuration. The numerical procedure uses radial basis functions (RBFs) to approximate spatial derivatives and the hybrid Padé–Newton approach by Lane and Akers [Stud. Appl. Math. 10, e12740 (2024)] ] to solve the resulting system of nonlinear equations. Numerical simulations are compared to experimental results. The simulations explain the asymmetry of laser spots as the result of the influence of the tank’s boundary on the global convective flow. Abstract © Optica
Source Publication
Applied Optics (ISSN 1559-128X | eISSN 2155-3165)
Recommended Citation
Jeremiah Lane, Benjamin Akers, Jonah Reeger, Justin Cook, and Martin Richardson, "Asymmetric steady thermal blooming," Appl. Opt. 64, E82-E91 (2025)
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This article is part of the Applied Optics Institutional Focus Issue of Applied Optics, Air Force Institute of Technology