Proposal for a photoacoustic ultrasonic generator based on Tamm plasmon structures

Area of Science:

• Plasmonics
• Acoustics
• Optics

Background:

• Tamm plasmon structures offer unique optical properties.
• Efficient conversion of light to sound is crucial for various applications.
• Existing methods for ultrasound generation have limitations.

Purpose of the Study:

• To propose and investigate a novel scheme for ultrasound wave generation using optically excited Tamm plasmon structures.
• To demonstrate the potential for using infrared semiconductor lasers for ultrasound excitation.
• To optimize the design of a Tamm plasmon-based photoacoustic generator.

Main Methods:

• Modeling of laser pulse absorption within the metallic layer.
• Simulation of heat transfer dynamics within the structure.
• Analysis of the dynamical properties of the Tamm plasmon structure.
• Optimization of structural design for efficient ultrasound generation.

Main Results:

• Tamm plasmon structures achieve total absorption of laser pulses across arbitrary wavelengths.
• The proposed system allows for ultrasound generation using infrared semiconductor lasers.
• The optimized design results in a photoacoustic generator capable of emitting ultrasound waves up to 100 MHz.
• The generator can produce ultrasound with a predefined frequency spectrum.

Conclusions:

• Optically excited Tamm plasmon structures provide an effective platform for photoacoustic ultrasound generation.
• The developed design enables high-frequency ultrasound emission with tunable spectral characteristics.
• This technology holds promise for advanced applications in ultrasound imaging and therapy.