Distance measurements by speckle correlation of objective speckle patterns, structured by the illumination

Publication: Research - peer-review › Journal article – Annual report year: 2012

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Distance measurements by speckle correlation of objective speckle patterns, structured by the illumination. / Jakobsen, Michael Linde ; Hanson, Steen Grüner.

In: Applied Optics, Vol. 51, No. 19, 2012, p. 4316-4324.

Publication: Research - peer-review › Journal article – Annual report year: 2012

In: Applied Optics, Vol. 51, No. 19, 2012, p. 4316-4324.

Publication: Research - peer-review › Journal article – Annual report year: 2012

Bibtex

@article{d2cfc0a73c854f5dab41362a1a1900ba,

title = "Distance measurements by speckle correlation of objective speckle patterns, structured by the illumination",

publisher = "Optical Society of America",

author = "Jakobsen, {Michael Linde} and Hanson, {Steen Grüner}",

note = "This paper was published in Applied Optics and is made available as an electronic reprint with the permission of OSA. The paper can be found at the following URL on the OSA website: http://www.opticsinfobase.org/ao/abstract.cfm?uri=ao-51-19-4316. Systematic or multiple reproduction or distribution to multiple locations via electronic or other means is prohibited and is subject to penalties under law.",

year = "2012",

volume = "51",

number = "19",

pages = "4316--4324",

journal = "Applied Optics",

issn = "1559-128X",

}

RIS

TY - JOUR

T1 - Distance measurements by speckle correlation of objective speckle patterns, structured by the illumination

A1 - Jakobsen,Michael Linde

A1 - Hanson,Steen Grüner

AU - Jakobsen,Michael Linde

AU - Hanson,Steen Grüner

PB - Optical Society of America

PY - 2012

Y1 - 2012

N2 - Objective speckles produced by two beams overlapping and interfering on a rough object surface contain information about the angle of incidence of the two beams, and how well they overlap. We obtain the autocovariance function for such a speckle pattern, and demonstrate how the information carried by the objective speckles can be used to probe the distance between the object and the observation plane. From a distance of 75 mm to a distance of 150 mm, and using an angle of 0.3 deg between the two incident beams, we can measure the actual distance with an uncertainty of better than ±0.1% of the full range. As long as the beams overlap at the object surface, the proposed method can measure distance with an uncertainty inversely proportional to the spot size at the object.

AB - Objective speckles produced by two beams overlapping and interfering on a rough object surface contain information about the angle of incidence of the two beams, and how well they overlap. We obtain the autocovariance function for such a speckle pattern, and demonstrate how the information carried by the objective speckles can be used to probe the distance between the object and the observation plane. From a distance of 75 mm to a distance of 150 mm, and using an angle of 0.3 deg between the two incident beams, we can measure the actual distance with an uncertainty of better than ±0.1% of the full range. As long as the beams overlap at the object surface, the proposed method can measure distance with an uncertainty inversely proportional to the spot size at the object.

JO - Applied Optics

JF - Applied Optics

SN - 1559-128X

IS - 19

VL - 51

SP - 4316

EP - 4324

ER -