| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 1785112 | Infrared Physics & Technology | 2007 | 5 Pages |
Abstract
In Gaussian Optics, beams with a circular cross section can easily be matched by using off-axis mirrors. Since the E-field distribution of a Gaussian beam mode is entirely independent in the two directions perpendicular to its axis of propagation, it is also possible to employ the formalism for asymmetric beams. Conventional off-axis mirrors, however, are not suitable to properly match these elliptical beams. In this case, astigmatic optics are required.This paper presents a method of designing astigmatic off-axis mirrors for Gaussian beam modes starting from a conventional off-axis mirror. A numerical simulation and an application for KOSMA’s 1.9 THz local oscillator for the GREAT instrument on SOFIA gives evidence supporting the theory.
Related Topics
Physical Sciences and Engineering
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Atomic and Molecular Physics, and Optics
Authors
A. Wagner-Gentner, U.U. Graf, M. Philipp, D. Rabanus,