Hybrid guided space-time optical modes in unpatterned films
Guardado en:
| Publicado en: | arXiv.org (Jan 7, 2020), p. n/a |
|---|---|
| Autor principal: | |
| Otros Autores: | , , , |
| Publicado: |
Cornell University Library, arXiv.org
|
| Materias: | |
| Acceso en línea: | Citation/Abstract Full text outside of ProQuest |
| Etiquetas: |
Sin Etiquetas, Sea el primero en etiquetar este registro!
|
MARC
| LEADER | 00000nab a2200000uu 4500 | ||
|---|---|---|---|
| 001 | 2334484323 | ||
| 003 | UK-CbPIL | ||
| 022 | |a 2331-8422 | ||
| 024 | 7 | |a 10.1038/s41467-020-20009-2 |2 doi | |
| 035 | |a 2334484323 | ||
| 045 | 0 | |b d20200107 | |
| 100 | 1 | |a Abbas Shiri | |
| 245 | 1 | |a Hybrid guided space-time optical modes in unpatterned films | |
| 260 | |b Cornell University Library, arXiv.org |c Jan 7, 2020 | ||
| 513 | |a Working Paper | ||
| 520 | 3 | |a Light can be confined transversely and delivered axially in a waveguide. However, waveguides are lossy static structures whose modal characteristics are fundamentally determined by the boundary conditions, and thus cannot be readily changed post-fabrication. Here we show that unpatterned planar optical films can be exploited for low-loss two-dimensional waveguiding by using `space-time' wave packets, which are the unique family of one-dimensional propagation-invariant pulsed optical beams. We observe `hybrid guided' space-time modes that are index-guided in one transverse dimension in the film and localized along the unbounded transverse dimension via the intrinsic spatio-temporal structure of the field. We demonstrate that these field configurations enable overriding the boundary conditions by varying post-fabrication the group index of the fundamental mode in a 2-\(\mu\)m-thick, 25-mm-long silica film, which is achieved by modifying the field's spatio-temporal structure along the unbounded dimension. Tunability of the group index over an unprecedented range from 1.26 to 1.77 around the planar-waveguide value of 1.47 is verified - while maintaining a spectrally flat zero-dispersion profile. Our work paves the way to to the utilization of space-time wave packets in on-chip photonic platforms, and may enable new phase-matching strategies that circumvent the restrictions due to intrinsic material properties. | |
| 653 | |a Planar waveguides | ||
| 653 | |a Material properties | ||
| 653 | |a Beams (radiation) | ||
| 653 | |a Wave packets | ||
| 653 | |a Silicon dioxide | ||
| 653 | |a Phase matching | ||
| 653 | |a Boundary conditions | ||
| 653 | |a Spacetime | ||
| 653 | |a Wave propagation | ||
| 653 | |a Thin films | ||
| 653 | |a Photonics | ||
| 653 | |a Pulse propagation | ||
| 653 | |a Waveguides | ||
| 700 | 1 | |a Yessenov, Murat | |
| 700 | 1 | |a Webster, Scott | |
| 700 | 1 | |a Schepler, Kenneth L | |
| 700 | 1 | |a Abouraddy, Ayman F | |
| 773 | 0 | |t arXiv.org |g (Jan 7, 2020), p. n/a | |
| 786 | 0 | |d ProQuest |t Engineering Database | |
| 856 | 4 | 1 | |3 Citation/Abstract |u https://www.proquest.com/docview/2334484323/abstract/embedded/7BTGNMKEMPT1V9Z2?source=fedsrch |
| 856 | 4 | 0 | |3 Full text outside of ProQuest |u http://arxiv.org/abs/2001.01991 |