Geometrical on-axis access to high-finesse resonators by quasi-imaging: a theoretical description. (30th January 2015)

• Record Type: Journal Article
• Authors: Weitenberg, J; Rußbüldt, P; Pupeza, I; Udem, Th; Hoffmann, H-D; Poprawe, R
• Is Part Of: Journal of optics. Volume 17:Number 2(2015:Feb.)
• Publication Date: 2015-01-30
• Subjects: resonators -- light propagation -- high-order harmonic generation; Optics -- Periodicals; 535.05
• DOI: 10.1088/2040-8978/17/2/025609
• Languages: English
• ISSNs: 2040-8978

Abstract

Abstract: We describe a novel method for providing geometrical on-axis access to an optical enhancement resonator through an on-axis aperture at one of its mirrors. A superposition of transverse modes in a stable degenerate resonator is used to form a field distribution which avoids the aperture and therefore exhibits small loss. Upon propagation in the resonator the modes acquire a different phase, and an on-axis intensity maximum is formed at a different position. We call this a quasi-imaging resonator, because it is related to imaging in the sense that a hole in the field distribution, exacted by the aperture, is reproduced after a resonator round trip.