Real-time Jones phase microscopy for studying transparent and birefringent specimens

Area of Science:

• Biomedical Optics
• Cancer Diagnostics
• Quantitative Phase Imaging

Background:

• Tissue birefringence is a key indicator for cancer diagnosis.
• Traditional methods use Mueller matrix algebra, which is intensity-based.
• Jones matrix analysis offers direct assessment of anisotropic response but requires phase and amplitude measurements, limiting its use.

Purpose of the Study:

• To develop a real-time imaging method for measuring Jones matrices.
• To enable direct assessment of tissue anisotropic response using quantitative phase imaging.
• To overcome the limitations of traditional intensity-based birefringence measurements.

Main Methods:

• Combined a broadband phase imaging system with a polarization-sensitive detector.
• Acquired Jones matrices at each pixel in megapixel scale images.
• Achieved near video rate capture speeds for real-time imaging.

Main Results:

• Successfully measured Jones matrices in real-time using quantitative phase imaging.
• Demonstrated the method's utility on standard targets, partially birefringent samples, dynamic specimens, and histopathological tissue.
• Enabled megapixel-scale, near video-rate acquisition of Jones matrices.

Conclusions:

• The proposed method provides a novel, real-time approach for Jones matrix measurement.
• This technique facilitates direct, quantitative assessment of tissue birefringence for potential cancer diagnosis.
• The method's speed and scale offer significant advantages over traditional techniques.