Low-cost scheme for high-precision dual-wavelength laser metrology
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Kok, Yitping; Ireland, Michael; Robertson, J Gordon; Tuthill, Peter G; Warrington, Benjamin A; Tango, William J
Description
A method capable of delivering relative optical path length metrology with nanometer precision is demonstrated. Unlike conventional dual-wavelength metrology, which employs heterodyne detection, the method developed in this work utilizes direct detection of interference fringes of two He-Ne lasers as well as a less precise stepper motor open-loop position control system to perform its measurement. Although the method may be applicable to a variety of circumstances, the specific application in...[Show more]
dc.contributor.author | Kok, Yitping | |
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dc.contributor.author | Ireland, Michael | |
dc.contributor.author | Robertson, J Gordon | |
dc.contributor.author | Tuthill, Peter G | |
dc.contributor.author | Warrington, Benjamin A | |
dc.contributor.author | Tango, William J | |
dc.date.accessioned | 2016-05-25T23:44:15Z | |
dc.date.available | 2016-05-25T23:44:15Z | |
dc.identifier.issn | 0003-6935 | |
dc.identifier.uri | http://hdl.handle.net/1885/101720 | |
dc.description.abstract | A method capable of delivering relative optical path length metrology with nanometer precision is demonstrated. Unlike conventional dual-wavelength metrology, which employs heterodyne detection, the method developed in this work utilizes direct detection of interference fringes of two He-Ne lasers as well as a less precise stepper motor open-loop position control system to perform its measurement. Although the method may be applicable to a variety of circumstances, the specific application in which this metrology is essential is in an astrometric optical long baseline stellar interferometer dedicated to precise measurement of stellar positions. In our example application of this metrology to a narrow-angle astrometric interferometer, measurement of nanometer precision could be achieved without frequency-stabilized lasers, although the use of such lasers would extend the range of optical path length the metrology can accurately measure. Implementation of the method requires very little additional optics or electronics, thus minimizing the cost and effort of implementation. Furthermore, the optical path traversed by the metrology lasers is identical to that of the starlight or science beams, even down to using the same photodetectors, thereby minimizing the noncommon path between metrology and science channels. | |
dc.description.sponsorship | This research was supported under the Australian Research Council’s Discovery Project funding scheme. Y. K. was supported by the University of Sydney International Scholarship (USydIS). | |
dc.publisher | Optical Society of America | |
dc.rights | © 2013 Optical Society of America. Publisher permission to archive the version was granted via email on 13/05/2015 | |
dc.source | Applied optics | |
dc.subject | Keywords: Direct detection; Dual wavelength laser; Heterodyne detection; Interference fringe; Nanometer precision; Optical path lengths; Precise measurements; Stellar interferometers; Measurements; Units of measurement | |
dc.title | Low-cost scheme for high-precision dual-wavelength laser metrology | |
dc.type | Journal article | |
local.description.notes | Imported from ARIES | |
local.identifier.citationvolume | 52 | |
dc.date.issued | 2013-04-20 | |
local.identifier.absfor | 020102 | |
local.identifier.absfor | 020599 | |
local.identifier.ariespublication | U3488905xPUB1266 | |
local.publisher.url | http://www.osa.org/en-us/home/ | |
local.type.status | Accepted Version | |
local.contributor.affiliation | Kok, Y, University of Sydney, Australia | |
local.contributor.affiliation | Ireland, Michael, College of Physical and Mathematical Sciences, CPMS Research School of Astronomy and Astrophysics, RSAA General, The Australian National University | |
local.contributor.affiliation | Robertson, James G, University of Sydney, Australia | |
local.contributor.affiliation | Tuthill, Peter G, University of Sydney, Australia | |
local.contributor.affiliation | Warrington, B A, Macquarie University, Australia | |
local.contributor.affiliation | Tango, W J, University of Sydney, Australia | |
local.identifier.essn | 1539-4522 | |
local.bibliographicCitation.issue | 12 | |
local.bibliographicCitation.startpage | 2808 | |
local.bibliographicCitation.lastpage | 2814 | |
local.identifier.doi | 10.1364/AO.52.002808 | |
dc.date.updated | 2016-06-14T08:41:20Z | |
local.identifier.scopusID | 2-s2.0-84876517364 | |
local.identifier.thomsonID | 000317923700036 | |
dcterms.accessRights | Open Access | |
Collections | ANU Research Publications |
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