Session Overview |
Nonlinear Optics, Nanophotonics and Plasmonics - Bloc 1Room: Cartier 2 |
Date: Tuesday, June 05 |
08:30 |
Optical Nonlinearity in InGaAsP/InP Passive Waveguides
Main Author: Kashif Awan Organization: University of Ottawa, Canada We report on, what we believe to be, the first study of the third-order nonlinear optical interactions in InxGa1-x Asy P1-y /InP strip-loaded waveguides. We have performed the linear propagation loss measurement, self-phase modulation, four-wave mixing and nonlinear absorption experiments with the fabricated waveguides. The measured linear propagation losses were 2.7 dB/cm for the fundamental TE mode, and 2.4 dB/cm for the fundamental TM mode. The nonlinear phase shift of up to 2.5 π was observed in self-phase modulation experiments. The experimentally calculated value of the two-photon absorption coefficient α2 was 15 cm/GW. The four-wave mixing conversion range, representing the maximum wavelength separation between the signal and idler spectral components, was observed to be 45 nm. |
08:45 |
Demonstration of Pockels effect in strained silicon waveguides
Main Author: Mathias Berciano Organization: Centre for Nanoscience and Nanotechnology, France We report on experimental characterization of strain-induced Pockels effect in silicon through the use of traveling-wave Mach-Zehnder interferometers working in the microwave regime. We demonstrated a modulation bandwidth higher than 20 GHz. |
09:00 |
Noise reduction performance of nonlinear amplitude discriminator schemes
Main Author: Wasim Lashkor Organization: McGill University, Canada Investigation of the performance of three different schemes of fiber amplitude discriminators in eliminating amplified spontaneous emission noise. |
09:15 |
Experimental investigation of second order nonlinearity in thin-film glass structures
Main Author: Seyed Hamed Jafari Organization: Carleton university, Canada In this presentation, we will report an enhanced second harmonic generation in poled glass structures. Alternating thin-film layers of doped and un-doped silica deposited on a thick silica wafer. Maker fringe experiment shows enhanced second harmonic generation in thermally poled samples. The results are then compared to a well-known nonlinear material such as Quartz. |
09:30 |
Inviscid Burgers Equation Dynamics in m-cresol/nylon Thermal Solution
Main Author: Domenico Bongiovanni Organization: INRS, Canada We report on an experimental observation of spatial Riemann wave dynamics in m-cresol/nylon thermal solution, obtained by properly tailoring the initial optical beam. Experimental results show controllable steepening and shock formation in good agreement with theory. |
09:45 |
Nanoscale control of high-harmonic generation from solids
Main Author: Giulio Vampa Organization: Stanford PULSE Institute, United States Control of nonperturbative high-harmonic generation from solids is achieved at the nanoscale with plasmonic and all-dielectric Si metasurfaces. The two methods are compared, and some opportunities arising from this precise control of the nonlinearity are presented. |
10:10 |
Extreme nonlinear optics for table-top ultrafast magnetic imaging
Main Author: François Légaré Organization: INRS, Canada We generate harmonics in neon, reaching the cobalt M-edge absorption resonance. A pump-probe scheme then allows us to retrieve demagnetization curves by observing resonant X-ray magnetic scattering on a multilayer cobalt/platinum sample. Using this setup, we are investigating the underlying physics of ultrafast demagnetization by changing the pump wavelength and its pulse duration. |