Single source CARS-based multimodal microscopy system for biological tissue imaging [Invited]

作者：Ming-Yu Sheng, Yuan Zhao, Zhenguo Wu, Jianhua Zhao, Harvey Lui, Sunil Kalia, Haishan Zeng · 发表于：Biomedical Optics Express · 年份：2023 · DOI：10.1364/boe.504978 · 被引用次数：6 · 研究领域：Spectroscopy Techniques in Biomedical and Chemical Research、Advanced Fluorescence Microscopy Techniques、Spectroscopy and Chemometric Analyses

A coherent anti-Stokes Raman scattering (CARS)-based multimodality microscopy system was developed using a single Ti:sapphire femtosecond laser source for biological imaging. It provides three complementary and co-registered imaging modalities: CARS, MPM (multiphoton microscopy), and RCM (reflectance confocal microscopy). The imaging speed is about 1 frame-per-second (fps) with a digital resolution of 1024 × 1024 pixels. This microscopy system can provide clear 2-dimensional and 3-dimensional images of ex-vivo biological tissue samples. Its spectral selection initiates vibrational excitation in lipid cells (approximately 2850 cm -1 ) using two filters on the pump and Stokes beam paths. The excitation can be tuned over a wide spectral range with adjustable spectral filters. The imaging capability of this CARS-based multimodal microscopy system was demonstrated using porcine fat, murine skin, and murine liver tissue samples.