High throughput static channeled interference imaging spectropolarimeter based on a Savart polariscope

Area of Science:

• Optics and Photonics
• Remote Sensing
• Instrumentation

Background:

• High-throughput imaging spectropolarimetry is crucial for detailed environmental and target analysis.
• Existing systems often face limitations in robustness and optical throughput.
• Developing advanced sensors is key to overcoming these challenges.

Purpose of the Study:

• To present a novel high throughput static channeled interference imaging spectropolarimeter (CIISP).
• To detail the optical layout, operation, and calibration techniques of the CIISP system.
• To demonstrate the sensor's applicability in target identification, color measurement, and agriculture monitoring.

Main Methods:

• The CIISP system utilizes two birefringent retarders and a Savart interferometer.
• A tempo-spatially mixed modulated mode with no internal moving parts ensures robustness.
• Radiometric, spectral, and polarimetric calibration techniques were developed and applied.

Main Results:

• The CIISP system operates over a 480-960nm spectral range with high optical throughput.
• Laboratory tests verified the system's performance, demonstrating its robustness and low noise.
• Outdoor measurements confirmed the sensor's capability for practical applications.

Conclusions:

• The developed CIISP is a robust, high-throughput instrument for spectropolarimetric measurements.
• The sensor's calibration and performance validation pave the way for its use in various fields.
• The CIISP shows significant potential for applications in target identification and environmental monitoring.