Electrostatic forward-viewing scanning probe for Doppler optical coherence tomography using a dissipative polymer...

Area of Science:

• Optics and Photonics
• Biomedical Engineering
• Materials Science

Background:

• Developing advanced imaging probes is crucial for high-resolution visualization in various scientific fields.
• Existing forward-viewing probes often face limitations in speed, viewing angle, or cost.
• Optical Coherence Tomography (OCT) requires efficient scanning mechanisms for real-time imaging.

Purpose of the Study:

• To design and characterize a novel, flexible scanning optical probe.
• To evaluate the probe's performance in terms of viewing angle and frame rate.
• To demonstrate the probe's utility in Optical Coherence Tomography (OCT) imaging.

Main Methods:

• Constructed a flexible probe using an etched optical fiber within a platinum coil and polymer.
• Utilized high voltage to drive probe oscillation, achieving wide viewing angles (13-33 degrees).
• Integrated the probe with a wavelength-swept source laser for OCT imaging, validated with a high-speed camera.

Main Results:

• Achieved high-frame-rate operation (10-140 fps) with a compact probe design (2.2 mm diameter).
• Demonstrated wide forward-viewing angles suitable for various imaging applications.
• Successfully acquired OCT images of a standard target and in vivo images of a tadpole heart.

Conclusions:

• The novel optomechanical design provides a simple and cost-effective solution for high-frame-rate forward-viewing scanning probes.
• This technology has potential applications in medical diagnostics and scientific research requiring real-time imaging.
• The developed probe offers enhanced capabilities for OCT imaging compared to existing methods.