From Event: SPIE Optical Engineering + Applications, 2016
One of the surprises of nonlinear optics, is that light may interact strongly with sound. Intense laser light literally “shakes” the glass in optical fibres, exciting acoustic waves (sound) in the fibre. Under the right conditions, it leads to a positive feedback loop between light and sound termed “Stimulated Brillouin Scattering,” or simply SBS. This nonlinear interaction can amplify or filter light waves with extreme precision in frequency which makes it uniquely suited to solve key problems in the fields of defence, biomedicine, wireless communications, spectroscopy and imaging. We have achieved the first demonstration of SBS in compact chip-scale structures, carefully designed so that the optical fields and the acoustic fields are simultaneously confined and guided. This new platform has opened a range of new functionalities that are being applied in communications and defence with breathtaking performance and compactness. My talk will introduce this new field and review our progress and achievements, including silicon based optical phononic processor.
Benjamin J. Eggleton and Amol Choudhary, "Good vibrations: Controlling light with sound
(Conference Presentation)," Proc. SPIE 9956, Ultrafast Nonlinear Imaging and Spectroscopy IV, 995613 (Presented at SPIE Optical Engineering + Applications: August 30, 2016; Published: 2 November 2016); https://doi.org/10.1117/12.2237219.5170791534001.
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Study of self-shadowing effect as a simple means to realize nanostructured thin films and layers with special attentions to birefringent obliquely deposited thin films and photo-luminescent porous silicon