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Technique for in situ measurement of free spectral range and transverse mode spacing of optical cavities

Stochino, Alberto; Arai, Koji; Adhikari, Rana X


Length and g-factor are fundamental parameters that characterize optical cavities. We developed a technique to measure these parameters in situ by determining the frequency spacing between the resonances of fundamental and spatial modes of an optical cavity. Two laser beams are injected into the cavity, and their relative frequency is scanned by a phase-lock loop, while the cavity is locked to either laser. The measurement of the amplitude of their beat note in transmission reveals the...[Show more]

CollectionsANU Research Publications
Date published: 2012-09-20
Type: Journal article
Source: Applied optics
DOI: 10.1364/AO.51.006571


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