Biophotonic crystal effects in multi-modal nonlinear microscopy

Summary from only given. We present a study using a multi-modal nonlinear microscopy, which reveals nonlinear optical activities in those naturally occurring biophotonic crystalline structures. This technique, based on a femtosecond Cr:forsterite laser at 1230 nm, combines different imaging modalities including second-, third-harmonic generations, and multi-photon fluorescence.