Abstract
In this paper, a high-sensitivity total-internal-reflection (TIR) heterodyne interferometer is proposed for measuring small angles. In the proposed interferometer, a half-wave plate and two quarter-wave plates that exhibit specific optic-axis azimuths are combined to form a phase shifter. When a rhomboid prism is placed between the phase shifter and an analyzer that exhibits suitable transmission-axis azimuth, it shifts and enhances the phase difference of the s- and p-polarization states at double TIR. The enhanced phase difference is dependent on the incident angle; thus small angles can be easily and accurately measured by estimating the phase difference. The experimental results demonstrate the feasibility of this method. Angular resolution and sensitivity levels superior to 1.2 × 10-4deg (2.1 × 10-6rad) and 100 (deg/deg), respectively, were attainable in a dynamic range of 0.5 deg.
| Original language | English |
|---|---|
| Pages (from-to) | 1903-1908 |
| Number of pages | 6 |
| Journal | Applied Optics |
| Issue number | 9 |
| DOIs | |
| Publication status | Published - 2014 Mar 20 |
Fingerprint
All Science Journal Classification (ASJC) codes
- Atomic and Molecular Physics, and Optics
Cite this
}
Small-angle measurement with highly sensitive total-internal-reflection heterodyne interferometer. / Lin, Jiun You; Liao, Yu Cheng.
In: Applied Optics, No. 9, 20.03.2014, p. 1903-1908.Research output: Contribution to journal › Article
TY - JOUR
T1 - Small-angle measurement with highly sensitive total-internal-reflection heterodyne interferometer
AU - Lin, Jiun You
AU - Liao, Yu Cheng
PY - 2014/3/20
Y1 - 2014/3/20
N2 - In this paper, a high-sensitivity total-internal-reflection (TIR) heterodyne interferometer is proposed for measuring small angles. In the proposed interferometer, a half-wave plate and two quarter-wave plates that exhibit specific optic-axis azimuths are combined to form a phase shifter. When a rhomboid prism is placed between the phase shifter and an analyzer that exhibits suitable transmission-axis azimuth, it shifts and enhances the phase difference of the s- and p-polarization states at double TIR. The enhanced phase difference is dependent on the incident angle; thus small angles can be easily and accurately measured by estimating the phase difference. The experimental results demonstrate the feasibility of this method. Angular resolution and sensitivity levels superior to 1.2 × 10-4deg (2.1 × 10-6rad) and 100 (deg/deg), respectively, were attainable in a dynamic range of 0.5 deg.
AB - In this paper, a high-sensitivity total-internal-reflection (TIR) heterodyne interferometer is proposed for measuring small angles. In the proposed interferometer, a half-wave plate and two quarter-wave plates that exhibit specific optic-axis azimuths are combined to form a phase shifter. When a rhomboid prism is placed between the phase shifter and an analyzer that exhibits suitable transmission-axis azimuth, it shifts and enhances the phase difference of the s- and p-polarization states at double TIR. The enhanced phase difference is dependent on the incident angle; thus small angles can be easily and accurately measured by estimating the phase difference. The experimental results demonstrate the feasibility of this method. Angular resolution and sensitivity levels superior to 1.2 × 10-4deg (2.1 × 10-6rad) and 100 (deg/deg), respectively, were attainable in a dynamic range of 0.5 deg.
UR - http://www.scopus.com/inward/record.url?scp=84942371266&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84942371266&partnerID=8YFLogxK
U2 - 10.1364/AO.53.001903
DO - 10.1364/AO.53.001903
M3 - Article
AN - SCOPUS:84942371266
SP - 1903
EP - 1908
JO - Applied Optics
JF - Applied Optics
SN - 1559-128X
IS - 9
ER -