Thermopile detector of light ellipticity

Area of Science:

• Optics and Photonics
• Sensor Technology
• Biomedical Diagnostics

Background:

• Polarimetric imaging is crucial for material analysis, biomedical diagnostics, vision, and astronomy.
• Measuring light ellipticity, related to the S3 Stokes parameter, traditionally requires multiple optical elements and measurements.

Purpose of the Study:

• To theoretically propose and experimentally demonstrate a new method for determining the S3 Stokes parameter.
• To develop a single photodetector element capable of directly measuring light ellipticity.

Main Methods:

• Theoretical proposal of a novel thermopile photodetector design.
• Experimental validation of the proposed photodetector element.
• Measurement of the S3 Stokes parameter using the photodetector's bipolar voltage output.

Main Results:

• Demonstration of a thermopile photodetector providing bipolar voltage output.
• The output voltage is directly proportional to the S3 Stokes parameter of incident light.
• Simplified measurement of light ellipticity without external optical components.

Conclusions:

• The developed thermopile photodetector offers a simplified and direct approach to measuring light ellipticity.
• This innovation has potential applications in various fields requiring polarimetric imaging.
• The device eliminates the need for complex optical setups, enhancing efficiency in polarimetric measurements.