Toward a practical light source for two-photon bioimaging, we have generated kilowatt peak power of 0.77 mum wavelength and 5 ps optical pulse via second-harmonic generation of the amplified output from a gain-switched 1.55 mum semiconductor laser. This compact scheme and stable optical-pulse-source has been successfully used for the two-photon fluorescence bioimaging of actin filaments in PtK2 cells.
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| http://dx.doi.org/10.1364/oe.14.003467 | DOI Listing |
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