Details
| Original language | English |
|---|---|
| Pages (from-to) | 7299-7304 |
| Number of pages | 6 |
| Journal | Applied Optics |
| Volume | 56 |
| Issue number | 25 |
| Publication status | Published - 1 Sept 2017 |
Abstract
In Michelson interferometer setups the standard way to generate different optical path lengths between a measurement arm and a reference arm relies on expensive high precision linear stages such as piezo actuators. We present an alternative approach based on the refraction of light at optical interfaces using a cheap stepper motor with high gearing ratio to control the rotation of a glass plate. The beam path is examined and a relation between angle of rotation and change in optical path length is devised. As verification, an experimental setup is presented, and reconstruction results from a measurement standard are shown. The reconstructed step height from this setup lies within 1.25% of the expected value.
ASJC Scopus subject areas
- Physics and Astronomy(all)
- Atomic and Molecular Physics, and Optics
- Engineering(all)
- Engineering (miscellaneous)
- Engineering(all)
- Electrical and Electronic Engineering
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In: Applied Optics, Vol. 56, No. 25, 01.09.2017, p. 7299-7304.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
T1 - Using refraction in thick glass plates for optical path length modulation in low coherence interferometry
AU - Kröger, Niklas
AU - Schlobohm, Jochen
AU - Pösch, Andreas
AU - Reithmeier, Eduard
PY - 2017/9/1
Y1 - 2017/9/1
N2 - In Michelson interferometer setups the standard way to generate different optical path lengths between a measurement arm and a reference arm relies on expensive high precision linear stages such as piezo actuators. We present an alternative approach based on the refraction of light at optical interfaces using a cheap stepper motor with high gearing ratio to control the rotation of a glass plate. The beam path is examined and a relation between angle of rotation and change in optical path length is devised. As verification, an experimental setup is presented, and reconstruction results from a measurement standard are shown. The reconstructed step height from this setup lies within 1.25% of the expected value.
AB - In Michelson interferometer setups the standard way to generate different optical path lengths between a measurement arm and a reference arm relies on expensive high precision linear stages such as piezo actuators. We present an alternative approach based on the refraction of light at optical interfaces using a cheap stepper motor with high gearing ratio to control the rotation of a glass plate. The beam path is examined and a relation between angle of rotation and change in optical path length is devised. As verification, an experimental setup is presented, and reconstruction results from a measurement standard are shown. The reconstructed step height from this setup lies within 1.25% of the expected value.
UR - http://www.scopus.com/inward/record.url?scp=85028602591&partnerID=8YFLogxK
U2 - 10.1364/AO.56.007299
DO - 10.1364/AO.56.007299
M3 - Article
C2 - 29047995
AN - SCOPUS:85028602591
VL - 56
SP - 7299
EP - 7304
JO - Applied Optics
JF - Applied Optics
SN - 1559-128X
IS - 25
ER -