|Title:||Three-color femtosecond source for simultaneous excitation of three fluorescent proteins in two-photon fluorescence microscopy||Authors:||Wang, K.
Horton, N. G.
Lin, C. P.
|Keywords:||Nonlinear optics;fibers;Fluorescence microscopy;Nonlinear microscopy;Harmonic generation and mixing||Issue Date:||Sep-2012||Start page/Pages:||1972||Source:||Biomedical Optics Express||Abstract:||
We demonstrate a fiber-based, three-color femtosecond source for simultaneous imaging of three fluorescent proteins (FPs) using two-photon fluorescence microscopy (2PM). The three excitation wavelengths at 775 nm, 864 nm and 950 nm, are obtained through second harmonic generation (SHG) of the 1550-nm pump laser and the 1728-nm and 1900-nm solitons generated through soliton self-frequency shift (SSFS) in a large-mode-area (LMA) fiber. These energetic pulses are well matched to the two-photon excitation peaks of red, cyan and yellow fluorescent proteins (TagRFPs, TagCFPs, and TagYFPs) for efficient excitation. We demonstrate simultaneous 2PM of human melanoma cells expressing a "rainbow" combination of these three fluorescent proteins.
|Appears in Collections:||醫學工程學研究所|
|BOE(2012)_three color fs source.pdf||2.72 MB||Adobe PDF||View/Open|
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