Strong self-lensing effects have been observed when propagating 35 ps duration, 1.06µm wavelength pulses over 5–10mm distance through thin-film slab waveguides formed from 4BCMU-polydiacetylene. The results are consistent with a negative nonlinear refractive index coefficient (n2 of magnitude 1–2 × 10−13cm2W−1.
Inspec keywords: nonlinear optics; polymer films; refractive index; optical waveguides
Other keywords:
Subjects: Nonlinear optics and devices; Optical waveguides; Nonlinear optics; Optical waveguides and couplers
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