Abstract
In this paper, a solution refractive index sensor is proposed based on a high resolution total-internal-reflection (TIR) interferometry. In the proposed sensor, a half-wave plate and a quarter-wave plate that exhibit specific optic-axis azimuths are combined to form a phase shifter. When an isosceles right-angle prism whose base contacts with a tested solution is placed between the phase shifter and an analyzer with suitable transmission-axis azimuth, it shifts and increases the phase difference of the s- and p-polarization states at one TIR. The increased phase difference relates to the solution refractive index; thus it can be easily and accurately measured by evaluating the phase difference. The feasibility was demonstrated by experimental results. This method has the merits of both common-path interferometry and heterodyne interferometry.
| Original language | English |
|---|---|
| Pages (from-to) | 190-196 |
| Number of pages | 7 |
| Journal | Sensors and Actuators, A: Physical |
| Volume | 241 |
| DOIs | |
| Publication status | Published - 2016 Apr 15 |
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All Science Journal Classification (ASJC) codes
- Electrical and Electronic Engineering
- Condensed Matter Physics
- Electronic, Optical and Magnetic Materials
- Metals and Alloys
- Surfaces, Coatings and Films
- Instrumentation
Cite this
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Solution refractive index sensor based on high resolution total-internal-reflection heterodyne interferometry. / Lin, Jiun-You.
In: Sensors and Actuators, A: Physical, Vol. 241, 15.04.2016, p. 190-196.Research output: Contribution to journal › Article
TY - JOUR
T1 - Solution refractive index sensor based on high resolution total-internal-reflection heterodyne interferometry
AU - Lin, Jiun-You
PY - 2016/4/15
Y1 - 2016/4/15
N2 - In this paper, a solution refractive index sensor is proposed based on a high resolution total-internal-reflection (TIR) interferometry. In the proposed sensor, a half-wave plate and a quarter-wave plate that exhibit specific optic-axis azimuths are combined to form a phase shifter. When an isosceles right-angle prism whose base contacts with a tested solution is placed between the phase shifter and an analyzer with suitable transmission-axis azimuth, it shifts and increases the phase difference of the s- and p-polarization states at one TIR. The increased phase difference relates to the solution refractive index; thus it can be easily and accurately measured by evaluating the phase difference. The feasibility was demonstrated by experimental results. This method has the merits of both common-path interferometry and heterodyne interferometry.
AB - In this paper, a solution refractive index sensor is proposed based on a high resolution total-internal-reflection (TIR) interferometry. In the proposed sensor, a half-wave plate and a quarter-wave plate that exhibit specific optic-axis azimuths are combined to form a phase shifter. When an isosceles right-angle prism whose base contacts with a tested solution is placed between the phase shifter and an analyzer with suitable transmission-axis azimuth, it shifts and increases the phase difference of the s- and p-polarization states at one TIR. The increased phase difference relates to the solution refractive index; thus it can be easily and accurately measured by evaluating the phase difference. The feasibility was demonstrated by experimental results. This method has the merits of both common-path interferometry and heterodyne interferometry.
UR - http://www.scopus.com/inward/record.url?scp=84958983375&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84958983375&partnerID=8YFLogxK
U2 - 10.1016/j.sna.2016.02.020
DO - 10.1016/j.sna.2016.02.020
M3 - Article
VL - 241
SP - 190
EP - 196
JO - Sensors and Actuators, A: Physical
JF - Sensors and Actuators, A: Physical
SN - 0924-4247
ER -