Two-photon imaging to a depth of 1000 microm in living brains by use of a Ti:Al2O3 regenerative amplifier |
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| Authors: | Theer Patrick Hasan Mazahir T Denk Winfried |
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| Institution: | Max-Planck Institute for Medical Research, Johnstrasse 29, D-69120 Heidelberg, Germany. ptheer@mpimf-heidelberg.mpg.de |
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| Abstract: | It is shown that two-photon fluorescence images can be obtained throughout almost the entire gray matter of the mouse neocortex by using optically amplified femtosecond pulses. The achieved imaging depth approaches the theoretical limit set by excitation of out-of-focus fluorescence. |
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