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Erschienen in:
2014 | OriginalPaper | Buchkapitel
Displacement Interferometry within a Passive Fabry-Perot Cavity
verfasst von : Miroslava Holá, Jan Hrabina, Antonín Fejfar, Jan Kočka, Jiří Stuchlík, Ondřej Číp, Jindřich Oulehla, Josef Lazar
Erschienen in: Fringe 2013
Verlag: Springer Berlin Heidelberg
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The idea of stabilized wavelength within a certain defined measuring range leads quite directly to a cavity – based design. A passive Fabry-Perot cavity has been traditionally used as an etalon for laser frequency stabilization in a large number of configurations and applications. Linking a laser optical frequency to a resonance of the cavity means in fact a stabilization of wavelength within a cavity where the standing wave has been generated. We tried to use this “grid” of the standing wave as a reference for direct position sensing. The concept of measuring within a standing wave generated by a reflector has been reported previously [1], but we propose here the measurement within a cavity together with the effect of stabilization of wavelength.