DC Field | Value | Language |
---|---|---|
dc.contributor.author | Kang, Myeong Soo | ko |
dc.contributor.author | Nazarkin, A. | ko |
dc.contributor.author | Brenn, A. | ko |
dc.contributor.author | Russell, P. St. J. | ko |
dc.date.accessioned | 2017-01-18T03:01:15Z | - |
dc.date.available | 2017-01-18T03:01:15Z | - |
dc.date.created | 2013-11-08 | - |
dc.date.created | 2013-11-08 | - |
dc.date.created | 2013-11-08 | - |
dc.date.created | 2013-11-08 | - |
dc.date.issued | 2009-04 | - |
dc.identifier.citation | NATURE PHYSICS, v.5, no.4, pp.276 - 280 | - |
dc.identifier.issn | 1745-2473 | - |
dc.identifier.uri | http://hdl.handle.net/10203/219708 | - |
dc.description.abstract | Interactions between light and hypersonic waves can be enhanced by tight field confinement, as shown in periodically structured materials(1), microcavities(2), micromechanical resonators(3) and photonic crystal fibres(4-6) (PCFs). There are many examples of weak sound-light interactions, for example, guided acoustic-wave Brillouin scattering in conventional optical fibres(7). This forward-scattering effect results from the interaction of core-guided light with acoustic resonances of the entire fibre cross-section, and is viewed as a noise source in quantum-optics experiments(8). Here, we report the observation of strongly nonlinear forward scattering of laser light by gigahertz acoustic vibrations, tightly trapped together in the small core of a silica-air PCF. Bouncing to and fro across the core at close to 90 degrees to the fibre axis, the acoustic waves form optical-phonon-like modes with a flat dispersion curve and a distinct cutoff frequency Omega(a). This ensures automatic phase-matching to the guided optical mode so that, on pumping with a dual-frequency laser source tuned to Omega(a), multiple optical side bands are generated, spaced by Omega(a). The number of strong side bands in this Raman-like process increases with pump power. The results point to a new class of designable nonlinear optical device with applications in, for example, pulse synthesis, frequency comb generation for telecommunications and fibre laser mode-locking. | - |
dc.language | English | - |
dc.publisher | NATURE PUBLISHING GROUP | - |
dc.title | Tightly trapped acoustic phonons in photonic crystal fibres as highly nonlinear artificial Raman oscillators | - |
dc.type | Article | - |
dc.identifier.wosid | 000265264500017 | - |
dc.type.rims | ART | - |
dc.citation.volume | 5 | - |
dc.citation.issue | 4 | - |
dc.citation.beginningpage | 276 | - |
dc.citation.endingpage | 280 | - |
dc.citation.publicationname | NATURE PHYSICS | - |
dc.identifier.doi | 10.1038/NPHYS1217 | - |
dc.contributor.localauthor | Kang, Myeong Soo | - |
dc.contributor.nonIdAuthor | Nazarkin, A. | - |
dc.contributor.nonIdAuthor | Brenn, A. | - |
dc.contributor.nonIdAuthor | Russell, P. St. J. | - |
dc.type.journalArticle | Article | - |
dc.subject.keywordPlus | STIMULATED BRILLOUIN-SCATTERING | - |
dc.subject.keywordPlus | OPTICAL-FIBERS | - |
dc.subject.keywordPlus | SURFACE-PLASMONS | - |
dc.subject.keywordPlus | GENERATION | - |
dc.subject.keywordPlus | PROPAGATION | - |
dc.subject.keywordPlus | MODULATION | - |
dc.subject.keywordPlus | WAVES | - |
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