Pflaum C, Seider D, Altmann K (2004)
Publication Type: Journal article, Original article
Publication year: 2004
Book Volume: 43
Pages Range: 1892-1901
Journal Issue: 9
URI: https://www.osapublishing.org/ao/abstract.cfm?uri=ao-43-9-1892&origin=search
DOI: 10.1364/AO.43.001892
A new method for computing eigenmodes of a laser resonator by the use of finite element analysis is presented. For this purpose, the scalar wave equation (Δ + k 2)Ẽ(x, y, z) = 0 is transformed into a solvable three-dimensional eigenvalue problem by the separation of the propagation factor exp(-ikz) from the phasor amplitude Ẽ(x, y, z) of the time-harmonic electrical field. For standing wave resonators, the beam inside the cavity is represented by a two-wave ansatz. For cavities with parabolic optical elements, the new approach has successfully been verified by the use of the Gaussian mode algorithm. For a diode-pumped solid-state laser with a thermally lensing crystal inside the cavity, the expected deviation between Gaussian approximation and numerical solution could be demonstrated clearly.
APA:
Pflaum, C., Seider, D., & Altmann, K. (2004). Three-Dimensional Finite Element Computation of Laser Cavity Eigenmodes. Applied Optics, 43(9), 1892-1901. https://dx.doi.org/10.1364/AO.43.001892
MLA:
Pflaum, Christoph, David Seider, and Konrad Altmann. "Three-Dimensional Finite Element Computation of Laser Cavity Eigenmodes." Applied Optics 43.9 (2004): 1892-1901.
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