Performing third-harmonic-generation (THG) microscopy with a cylindrically focused Gaussian beam results in significant differences from standard THG microscopy owing to the different phase-matching geometry. These differences are characterized analytically in the slowly varying envelope approximation. It is shown that THG is not observed in samples with normal dispersion even for line illumination. We use this to perform video-rate THG microscopy.
© 2004 Optical Society of America
(110.6880) Imaging systems : Three-dimensional image acquisition
(180.5810) Microscopy : Scanning microscopy
(190.4160) Nonlinear optics : Multiharmonic generation
(190.7110) Nonlinear optics : Ultrafast nonlinear optics
Dan Oron and Yaron Silberberg, "Third-harmonic generation with cylindrical Gaussian beams," J. Opt. Soc. Am. B 21, 1964-1968 (2004)