Nonlinear photonics in metal and graphene-based nanostructures |
| סוג | Special Seminar - Solid State Institute, Technion |
| מרצה: | Dr.Andrea Marini |
| שיוך: | ICFO – The Institute of Photonic Sciences, Barcelona, Spain |
| תאריך: | 22.01.2017 |
| שעה: | 11:30 - 12:30 |
| מיקום: | Lidow Asher Peres (502) |
| הערה: | Host: Professor Noam Soker |
| תקציר: | We discuss the nonlinear response of gold-based plasmonic waveguides excited with ultrafast optical pulses, showing that interband absorption can be suppressed via selfinduced-transparency plasmon solitons, thus opening novel routes for optical processing of information at the subwavelength scale. In addition, we discuss slow light in epsilon-nearzero materials, enabling optical data storage and the enhancement of nonlinear processes for harmonic generation and optical control. Finally, we discuss the potential of graphene for plasmon-based spectrometry-free sensing, high harmonic generation, and for the development of cavity-free lasers. We show that saturable absorption of graphene occurs at remarkably low intensities and can be exploited to achieve self-organization of light into dissipative optical solitons in graphene-based random lasers, thus enabling single-mode operation in such disordered structures. |