Arbitrary multi-site two-photon excitation in four dimensions

Details Arbitrary multi-site two-photon excitation in four dimensions Arbitrary multi-site two-photon excitation in four dimensions

2009-07-07

arxiv.org/abs/0907.1150v2

Applied Physics Letters 95, 093701 (2009)

Physics

Optics

10 pages including 4 figures

Scientific paper

We demonstrate dynamic and arbitrary multisite two-photon excitation in three dimensions using the holographic projection method. Rapid response (fourth dimension) is achieved through high-speed noniterative calculation of the hologram using a video graphics accelerator board. We verify that the projected asymmetric spot configurations have sufficient spatiotemporal photon density for localized two-photon excitation. This system is a significant advance and can be applied to time-resolved photolysis of caged compounds in biological cells and complex neuronal networks, nonlinear microfabrication and volume holographic optical storage.

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