Скачать презентацию Multistage Accelerating Beams Moti Fridman 1 Alessandro Farsi Скачать презентацию Multistage Accelerating Beams Moti Fridman 1 Alessandro Farsi

3cf9ebe890edc68b1540d5495933eada.ppt

  • Количество слайдов: 19

Multistage Accelerating Beams Moti Fridman 1, Alessandro Farsi 2 and Alexander L. Gaeta 2 Multistage Accelerating Beams Moti Fridman 1, Alessandro Farsi 2 and Alexander L. Gaeta 2 1 School of Engineering, Bar Ilan University, Ramat Gan, 52900, Israel 2 School of Applied and Engineering Physics, Cornell University, Ithaca, NY 14853, USA

Caustics Menaechmus ~ 400 BC Caustics Menaechmus ~ 400 BC

Accelerating beam of light G. A. Siviloglou et. al. (2007) Accelerating beam of light G. A. Siviloglou et. al. (2007)

Accelerating beam in space Mask imposing cubic phase Input beam Lens Accelerating beam Accelerating beam in space Mask imposing cubic phase Input beam Lens Accelerating beam

Accelerating beam of electrons N. V. Bloch et. al. (2012) Accelerating beam of electrons N. V. Bloch et. al. (2012)

Optical processing based on time-space duality Spatial domain x z diffraction Temporal domain z Optical processing based on time-space duality Spatial domain x z diffraction Temporal domain z dispersive broadening Spatial diffraction Dispersive propagation Akhmanov, Sukhorukov, and Chirkin, Sov. Phys. - JETP, 28, 748, (1969). Kolner, IEEE J. Quantum Electron. 30, 1951 (1994).

Imaging in space lens quadratic phase shift in space • Imaging achieved by adding Imaging in space lens quadratic phase shift in space • Imaging achieved by adding a quadratic phase to wavefront.

Temporal imaging dispersive elements quadratic phase shift in time • Imaging achieved by adding Temporal imaging dispersive elements quadratic phase shift in time • Imaging achieved by adding a quadratic phase to the signal.

Accelerating beam in time cubic phase shift in time and a lens dispersion Accelerating beam in time cubic phase shift in time and a lens dispersion

Imposing cubic phase in time • Look for interaction that imparts quadratic phase shift. Imposing cubic phase in time • Look for interaction that imparts quadratic phase shift. • Parametric mixing with a quadratic chirped pump Quadratic dispersion D quadratic frequency shift pump pulse

Imposing cubic phase in time Pump Diffracting grating Imposing cubic phase in time Pump Diffracting grating

Reflecting stairs Reflecting stairs

Accelerating beam in time Accelerating beam in time

Multistage accelerating beam Stage 1 idler signal FWM Multistage accelerating beam Stage 1 idler signal FWM

Multistage accelerating beam Stage 1 Stage 2 Idler #2 idler signal FWM Multistage accelerating beam Stage 1 Stage 2 Idler #2 idler signal FWM

Experimental setup Experimental setup

Accelerating beam in time Accelerating beam in time

Multistage accelerating beam in time Multistage accelerating beam in time

Conclusions • Accelerating beam in time. • Multistage acceleration. • More complex dispersion relations. Conclusions • Accelerating beam in time. • Multistage acceleration. • More complex dispersion relations. • Space-time equivalent can open a rout for many more novel demonstrations.