Optical sensing based on phase interrogation with a Young's interference hologram using a digital micromirror device.

Area of Science:

• Optics and Photonics
• Nanotechnology
• Sensor Technology

Background:

• Nanophotonic sensors require precise phase interrogation techniques.
• Existing methods can suffer from phase noise and fluctuations.
• Digital micromirror devices offer advanced control over light manipulation.

Purpose of the Study:

• To introduce a novel holographic interferometric technique for nanophotonic sensor phase interrogation.
• To demonstrate low phase noise and fluctuation using a digital micromirror device (DMD) spatial light modulator.
• To enable simultaneous beam shaping and phase shifting for efficient sensor analysis.

Main Methods:

• Utilizing a digital micromirror device (DMD) spatial light modulator for beam shaping and phase shifting.
• Implementing a common-path heterodyne Young's interference experiment for nanophotonic device interrogation.
• Applying the technique to temperature sensing with Tamm plasmon photonic crystals.

Main Results:

• Achieved low phase noise and fluctuation in holographic interferometric phase interrogation.
• Successfully demonstrated simultaneous control over beam shaping and phase shifting.
• Validated the technique's efficiency in probing resonant structures, including those with deep attenuation at resonance.

Conclusions:

• The proposed holographic interferometric technique offers a robust method for nanophotonic sensor interrogation.
• The use of DMD spatial light modulators enhances precision and control in interferometric measurements.
• This technique shows significant potential for applications in advanced sensing, such as temperature monitoring.