Thickness dependence of optical second harmonic generation in collagen fibrils | Zendy

ShiWei Chu | Zendy; Shih-Peng Tai | Zendy; MingChe Chan | Zendy; ChiKuang Sun | Zendy; I-Ching Hsiao | Zendy; Chi-Hung Lin | Zendy; YungChih Chen | Zendy; Bai-Ling Lin | Zendy

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Thickness dependence of optical second harmonic generation in collagen fibrils

Author(s) -

ShiWei Chu,

Shih-Peng Tai,

MingChe Chan,

ChiKuang Sun,

I-Ching Hsiao,

Chi-Hung Lin,

YungChih Chen,

Bai-Ling Lin

Publication year - 2007

Publication title -

optics express

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 1.394

H-Index - 271

ISSN - 1094-4087

DOI - 10.1364/oe.15.012005

Subject(s) - fibril , collagen fibril , optics , second harmonic generation , materials science , interference (communication) , harmonic , nonlinear optics , nonlinear system , nanometre , optical microscope , matrix (chemical analysis) , nonlinear optical , molecular physics , biophysics , physics , scanning electron microscope , laser , composite material , channel (broadcasting) , electrical engineering , engineering , quantum mechanics , biology

Simultaneous backward and forward second harmonic generations from isolated type-I collagen matrix are observed. Optical interference behaviors of these nonlinear optical signals are studied with accurately determined fibril thickness by an atomic force microscope. The nonlinear emission directions are strongly dependent on the coherent interaction within and between collagen fibrils. A linear relationship is obtained to estimate collagen fibril thickness with nanometer precision noninvasively by evaluating the forward/backward second harmonic generation ratio.

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