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Conference Paper
Advanced Solid-State Photonics
Santa Fe, New Mexico United States
February 1, 2004
ISBN: 1-55752-771-7
Advanced Concepts and Novel Architectures (ACNA)

Computation of Laser Cavity Eigenmodes by the Use of a 3D Finite Element Approach

Konrad Altmann, Christoph Pflaum, and David Seider


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A new method for computing eigenmodes of a laser resonator by the use of fi-nite element analysis (FEA) is presented. For this purpose, the scalar wave equation [Δ + k 2](x, y, z) = 0 is transformed into a solvable 3D eigenvalue problem by separating out the propagation factor exp(-ikz) from the phasor amplitude (x, y, z) of the time-harmonic electrical field. For cavities with parabolic optical elements the new approach has successfully been verified by the use of the gaussian mode algorithm. For a DPSSL with a thermally lensing crystal inside the cavity the expected deviation between gaussian approximation and numerical solution could be demonstrated clearly.

© 2004 Optical Society of America

OCIS Codes
(000.4430) General : Numerical approximation and analysis
(140.3410) Lasers and laser optics : Laser resonators
(140.3580) Lasers and laser optics : Lasers, solid-state
(140.4780) Lasers and laser optics : Optical resonators

K. Altmann, C. Pflaum, and D. Seider, "Computation of Laser Cavity Eigenmodes by the Use of a 3D Finite Element Approach," in Advanced Solid-State Photonics (TOPS), G. Quarles, ed., Vol. 94 of OSA Trends in Optics and Photonics (Optical Society of America, 2004), paper 497.

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