Simulation of Raman scattering including detector parameters and sampling volume.

Area of Science:

• Biomedical Optics
• Spectroscopy
• Computational Modeling

Background:

• Raman spectroscopy provides chemical composition data for biological information extraction.
• Simulating Raman spectroscopy in turbid media is complex due to photon scattering.
• Accurate modeling is crucial for developing effective in vivo biomedical applications.

Purpose of the Study:

• To develop an efficient simulation technique for Raman spectroscopy in turbid media.
• To incorporate detector parameters and sampling volume into the simulation.
• To enable simulation of various Raman spectroscopy setups and geometries.

Main Methods:

• Utilized the Monte Carlo (MC) method to simulate photon motion in turbid media.
• Implemented a two-stage numerical simulation: photon fluence calculation and Raman photon generation.
• Modeled both confocal and optical fiber probe Raman configurations.

Main Results:

• The model efficiently simulates Raman signals in diverse phantoms and geometries.
• Simulations accounted for focused and collimated laser beams, numerical aperture, and beam radius.
• Validated the simulation technique for complex scattering environments.

Conclusions:

• The developed Monte Carlo simulation is an efficient tool for Raman spectroscopy in turbid media.
• This technique can aid in optimizing Raman system design for in vivo biomedical research.
• Future work can leverage these simulations to enhance diagnostic and research capabilities.