Print Email Facebook Twitter Design of a folded, multi-pass Fabry–Perot cavity for displacement metrology Title Design of a folded, multi-pass Fabry–Perot cavity for displacement metrology Author Joo, K.M. Ellis, J.D. Spronck, J.W. Munnig Schmidt, R.H. Faculty Mechanical, Maritime and Materials Engineering Department Precision and Microsystems Engineering Date 2009-12-31 Abstract We present a folded, multi-pass cavity design for displacement measuring Fabry–Perot interferometry. The cavity length is designed to be one-quarter of the physical length needed for a typical Fabry–Perot interferometer by using a quarter-wave plate and a retroreflector. This enhances the displacement sensitivity by a factor of four, allowing for higher resolution in viewing the effects caused by mechanical motions, refractive index changes and frequency fluctuations from the laser source. Furthermore, the geometrical error motions are minimized by using a retroreflector due to its tip–tilt insensitivity. In this note, a theoretical analysis of the folded, multi-pass Fabry–Perot cavity is described and analyzed with Jones matrices in ideal and non-ideal designs. Subject FabryPerot interferometer, displacement, cavity design To reference this document use: http://resolver.tudelft.nl/uuid:bee12286-f7fc-40b1-aa2c-4ea4edeaf34e DOI https://doi.org/10.1088/0957-0233/20/10/107001 Publisher Institute of Physics ISSN 0957-0233 Source http://iopscience.iop.org/0957-0233/20/10/107001 Source Measurement science and technology, 20 Part of collection Institutional Repository Document type journal article Rights (c)2009 The Authors; Institute of Physics Files PDF Joo.pdf 222.21 KB Close viewer /islandora/object/uuid:bee12286-f7fc-40b1-aa2c-4ea4edeaf34e/datastream/OBJ/view