NDLI: Positioning of mirror by means of capacitor probes

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Positioning of mirror by means of capacitor probes

Content Provider	Scilit
Author	Hoeven, C. J. Van Der Muller, F. H. Oorschot, B. P. J. Van Turner, R.
Copyright Year	1977
Description	Journal: Journal of Physics E: Scientific Instruments The position of the movable mirror in a Michelson interferometer may be controlled by means of three capacitor probes situated symmetrically about the mirror. An aluminium-coated portion of the mirror flat serves as one of the capacitor plates, the other being attached to the supporting framework. The mirror itself is positioned at either of its two extremes by means of three piezoelectric elements. Servo-systems are used to compare the capacitance of each probe with a standard capacitor and to apply the resulting error signal to the appropriate piezoelectric support. In this way the stability of the mirror is ultimately limited by the stability of the reference capacitors and supporting framework.
Related Links	http://iopscience.iop.org/article/10.1088/0022-3735/10/12/026/pdf
Ending Page	1286
Page Count	3
Starting Page	1284
ISSN	00223735
DOI	10.1088/0022-3735/10/12/026
Journal	Journal of Physics E: Scientific Instruments
Issue Number	12
Volume Number	10
Language	English
Publisher	IOP Publishing
Publisher Date	1977-12-01
Access Restriction	Open
Subject Keyword	Journal: Journal of Physics E: Scientific Instruments
Content Type	Text
Resource Type	Article
Subject	Physics and Astronomy Instrumentation Engineering Materials Science

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