scholarly journals Ultrafast optical pulse shaping using dielectric metasurfaces

Science ◽  
2019 ◽  
Vol 364 (6443) ◽  
pp. 890-894 ◽  
Author(s):  
Shawn Divitt ◽  
Wenqi Zhu ◽  
Cheng Zhang ◽  
Henri J. Lezec ◽  
Amit Agrawal
Keyword(s):  
Pulse Shaping ◽  
Near Infrared ◽  
Ultrafast Lasers ◽  
Frequency Comb ◽  
High Spectral Resolution ◽  
High Peak Power ◽  
Pulse Modulation ◽  
Ultrafast Optical ◽  
Large Bandwidth ◽  
Optical Pulse Shaping

Advances in ultrafast lasers, chirped pulse amplifiers, and frequency comb technology require fundamentally new pulse-modulation strategies capable of supporting unprecedentedly large bandwidth and high peak power while maintaining high spectral resolution. We demonstrate how dielectric metasurfaces can be leveraged to shape the temporal profile of a near-infrared femtosecond pulse. Finely tailored pulse-shaping operations, including splitting, compression, chirping, and higher-order distortion, are achieved using a Fourier-transform setup embedding metasurfaces able to manipulate, simultaneously and independently, the amplitude and phase of the constituent frequency components of the pulse. Exploiting metasurfaces to manipulate the temporal characteristics of light expands their impact and opens new vistas in the field of ultrafast science and technology.

Real-time adaptive amplitude feedback in an AOM-based ultrafast optical pulse shaping system

1999 ◽  
Vol 11 (12) ◽  
pp. 1665-1667 ◽  
Author(s):  
Weiguo Yang ◽  
Feng Huang ◽  
M.R. Fetterman ◽  
J.C. Davis ◽  
D. Goswami ◽  
...  
Keyword(s):  
Real Time ◽  
Pulse Shaping ◽  
Optical Pulse ◽  
Ultrafast Optical ◽  
Optical Pulse Shaping ◽  
Shaping System

Ultrafast optical pulse shaping using dielectric metasurfaces (Conference Presentation)

2019 ◽  
Author(s):  
Amit Kumar Agrawal ◽  
Shawn Divitt ◽  
Wenqi Zhu ◽  
Cheng Zhang ◽  
Henri J. Lezec
Keyword(s):  
Pulse Shaping ◽  
Optical Pulse ◽  
Ultrafast Optical ◽  
Optical Pulse Shaping

Optical-wavelength-domain code division multiplexing using an AOM-based ultrafast optical pulse-shaping approach

1998 ◽  
Author(s):  
Weiguo Yang ◽  
Jennifer Davis ◽  
Debabrata Goswami ◽  
Matthew Fetterman ◽  
Warren S. Warren
Keyword(s):  
Pulse Shaping ◽  
Optical Pulse ◽  
Optical Wavelength ◽  
Ultrafast Optical ◽  
Optical Pulse Shaping ◽  
Code Division Multiplexing

Coherent control of Bloch oscillations by means of optical pulse shaping

2005 ◽  
Vol 71 (15) ◽  
Author(s):  
R. Fanciulli ◽  
A. M. Weiner ◽  
M. M. Dignam ◽  
D. Meinhold ◽  
K. Leo
Keyword(s):  
Pulse Shaping ◽  
Optical Pulse ◽  
Coherent Control ◽  
Bloch Oscillations ◽  
Optical Pulse Shaping

scholarly journals Ultrafast optical manipulation of magnetic order in ferromagnetic materials

2020 ◽  
Vol 7 (1) ◽  
Author(s):  
Chuangtang Wang ◽  
Yongmin Liu
Keyword(s):  
Data Storage ◽  
Optical Switching ◽  
Ultrafast Lasers ◽  
Transport Model ◽  
Magnetic Interaction ◽  
Ferromagnetic Materials ◽  
Magnetic Storage ◽  
Magnetization Dynamics ◽  
Quarter Century ◽  
Ultrafast Optical

Abstract The interaction between ultrafast lasers and magnetic materials is an appealing topic. It not only involves interesting fundamental questions that remain inconclusive and hence need further investigation, but also has the potential to revolutionize data storage technologies because such an opto-magnetic interaction provides an ultrafast and energy-efficient means to control magnetization. Fruitful progress has been made in this area over the past quarter century. In this paper, we review the state-of-the-art experimental and theoretical studies on magnetization dynamics and switching in ferromagnetic materials that are induced by ultrafast lasers. We start by describing the physical mechanisms of ultrafast demagnetization based on different experimental observations and theoretical methods. Both the spin-flip scattering theory and the superdiffusive spin transport model will be discussed in detail. Then, we will discuss laser-induced torques and resultant magnetization dynamics in ferromagnetic materials. Recent developments of all-optical switching (AOS) of ferromagnetic materials towards ultrafast magnetic storage and memory will also be reviewed, followed by the perspectives on the challenges and future directions in this emerging area.

Sign in / Sign up

Export Citation Format

Share Document