Multi-window SRS imaging using a rapid widely tunable fiber laser
Abstract
Spectroscopic stimulated Raman scattering (SRS) imaging has become a useful tool finding a broad range of applications. Yet, wider adoption is hindered by the bulky and environmentally-sensitive solid-state optical parametric oscillator (OPO) in current SRS microscope. Moreover, chemically-informative multi-window SRS imaging across C-H, C-D and fingerprint Raman regions is challenging due to the slow wavelength tuning speed of the solid-state OPO. In this work, we present a multi-window SRS imaging system based on a compact and robust fiber laser with rapid and widely tuning capability. To address the relative intensity noise intrinsic to fiber laser, we implemented auto-balanced detection which enhances the signal-to-noise ratio of stimulated Raman loss imaging by 23 times. We demonstrate high-quality SRS metabolic imaging of fungi, cancer cells, and Caenorhabditis elegans across the C-H, C-D and fingerprint Raman windows. Our re-sults showcase the potential of the compact multi-window SRS system for a broad range of applications.
Cite
@article{arxiv.2108.08440,
title = {Multi-window SRS imaging using a rapid widely tunable fiber laser},
author = {Hongli Ni and Peng Lin and Yifan Zhu and Meng Zhang and Yuying Tan and Yuewei Zhan and Ji-Xin Cheng},
journal= {arXiv preprint arXiv:2108.08440},
year = {2021}
}
Comments
7 figures