Simultaneous Multichannel Nonlinear Imaging: Combined Two-Photon Excited Fluorescence and Second-Harmonic Generation Microscopy
SYDNEY UNIV (AUSTRALIA) SCHOOL OF PHYSICS
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Simultaneous two-photon excited fluorescence TPF and second-harmonic generation SHG imaging is demonstrated using a single femtosecond laser and a scanning microscope. This composite nonlinear microscopic technique was applied to imaging DNA and chromosomes, and it was shown that the two different interaction mechanisms provide complementary information on the structure and nonlinear properties of these biological materials beyond that achievable using either TPF or SHG imaging alone. The use of separate modes of detection, in reflection and transmission respectively, and the simultaneous nature of the acquisition of the two images allows pure TPF and SHG images in precise registration to be obtained.
- Electrooptical and Optoelectronic Devices