Coherence scanning interferometry (CSI) is any of a class of optical surface measurement methods wherein the localization of interference fringes during a scan of optical path length provides a means to determine surface characteristics such as topography, transparent film structure, and optical properties. CSI is currently the most common interference microscopy technique for areal surface topography measurement.[1] The term "CSI" was adopted by the International Organization for Standardization (ISO).[2]
Characteristic CSI signal
The technique encompasses but is not limited to instruments that use spectrally broadband, visible sources (white light) to achieve interference fringe localization. CSI uses either fringe localization alone or in combination with interference fringe phase, depending on the surface type, desired surface topography repeatability and software capabilities. The table below compiles alternative terms that conform at least in part to the above definition.
Acronym
Term
Reference
CSI
Coherence scanning interferometry
[3]
CPM
Coherence probe microscope
[4]
CSM
Coherence scanning microscope
[5]
CR
Coherence radar
[6]
CCI
Coherence correlation interferometry
[7]
MCM
Mirau correlation microscope
[8]
WLI
White light interferometry
[9]
WLSI
White light scanning interferometry
[10]
SWLI
Scanning white light interferometry
[11]
WLS
White Light Scanner
WLPSI
White light phase shifting interferometry
[12]
VSI
Vertical scanning interferometry
[13]
RSP
Rough surface profiler
[14]
IRS
Infrared scanning
[15]
OCT
Full-field optical coherence tomography
[16]
^de Groot, P (2015). "Principles of interference microscopy for the measurement of surface topography". Advances in Optics and Photonics. 7 (1): 1–65. Bibcode:2015AdOP....7....1D. doi:10.1364/AOP.7.000001.
^ISO (2013). 25178-604:2013(E): Geometrical product specification (GPS) – Surface texture: Areal – Nominal characteristics of non-contact (coherence scanning interferometric microscopy) instruments (2013(E) ed.). Geneva: International Organization for Standardization.
^Windecker, R.; Haible, P.; Tiziani, H. J. (1995). "Fast Coherence Scanning Interferometry for Measuring Smooth, Rough and Spherical Surfaces". Journal of Modern Optics. 42 (10): 2059–2069. Bibcode:1995JMOp...42.2059W. doi:10.1080/09500349514551791.
^Davidson, M.; Kaufman, K.; Mazor, I. (1987). "The Coherence Probe Microscope". Solid State Technology. 30 (9): 57–59.
^Lee, B. S.; Strand, T. C. (1990). "Profilometry with a coherence scanning microscope". Appl Opt. 29 (26): 3784–3788. Bibcode:1990ApOpt..29.3784L. doi:10.1364/ao.29.003784. PMID 20567484.
^Dresel, T.; Häusler, G.; Venzke, H. (1992). "Three-dimensional sensing of rough surfaces by coherence radar". Applied Optics. 31 (7): 919–925. Bibcode:1992ApOpt..31..919D. doi:10.1364/ao.31.000919. PMID 20720701.
^Lee-Bennett, I. (2004). Advances in non-contacting surface metrology. Optical Fabrication and Testing, OTuC1.
^Kino, G. S.; Chim, S. S. C. (1990). "Mirau correlation microscope". Applied Optics. 29 (26): 3775–83. Bibcode:1990ApOpt..29.3775K. doi:10.1364/ao.29.003775. PMID 20567483.
^Larkin, K. G. (1996). "Efficient nonlinear algorithm for envelope detection in white light interferometry". Journal of the Optical Society of America A. 13 (4): 832. Bibcode:1996JOSAA..13..832L. CiteSeerX 10.1.1.190.4728. doi:10.1364/josaa.13.000832.
^Wyant, J. C. (September, 1993). How to extend interferometry for rough-surface tests. Laser Focus World, 131-135.
^Deck, L.; de Groot, P. (1994). "High-speed noncontact profiler based on scanning white-light interferometry". Applied Optics. 33 (31): 7334–7338. Bibcode:1994ApOpt..33.7334D. doi:10.1364/ao.33.007334. PMID 20941290.
^Schmit, J.; Olszak, A. G. (2002). Creath, Katherine; Schmit, Joanna (eds.). "Challenges in white-light phase-shifting interferometry". Proc. SPIE. Interferometry XI: Techniques and Analysis. 4777: 118–127. Bibcode:2002SPIE.4777..118S. doi:10.1117/12.472211. S2CID 128892213.
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