Self-reference method for measuring the transmission matrices of scattering media

Area of Science:

• Optics and Photonics
• Wavefront Shaping
• Scattering Media

Background:

• Manipulating light propagation through scattering media is crucial for advanced optical applications.
• Transmission Matrix (TM) measurement is a key technique for controlling light in such media.
• Existing TM measurement methods can lack stability or broad applicability.

Purpose of the Study:

• To introduce a novel, highly stable, and universally applicable method for measuring transmission matrices (TMs).
• To enable precise control of light propagation through scattering media.
• To enhance wavefront shaping capabilities for optical imaging and communication.

Main Methods:

• A new holographic measurement technique, termed the self-reference method, is proposed.
• Reference light is superimposed directly onto the signal light for holographic measurement.
• The method imposes no restrictions on the signal light, allowing compatibility with various input bases.

Main Results:

• The self-reference method demonstrated high stability and universal applicability for TM measurement.
• Experimental verification achieved high-quality light focusing through a scattering medium.
• The method accurately measures TMs, confirming its effectiveness.

Conclusions:

• The self-reference method offers an ideal approach for transmission matrix measurement and wavefront shaping.
• This technique holds significant potential for improving imaging and communication technologies in scattering environments.
• The method's universality and stability make it a valuable tool for optical research and development.