Asset Details
Do you wish to reserve the book?
Ultrafast all-optical tuning of direct-gap semiconductor metasurfaces
Hey, we have placed the reservation for you!
By the way, why not check out events that you can attend while you pick your title.
Oops! Something went wrong.
Looks like we were not able to place the reservation. Kindly try again later.
Are you sure you want to remove the book from the shelf?
Ultrafast all-optical tuning of direct-gap semiconductor metasurfaces
Do you wish to request the book?
Ultrafast all-optical tuning of direct-gap semiconductor metasurfaces
Please be aware that the book you have requested cannot be checked out. If you would like to checkout this book, you can reserve another copy
We have requested the book for you!
Your request is successful and it will be processed during the Library working hours. Please check the status of your request in My Requests.
Oops! Something went wrong.
Looks like we were not able to place your request. Kindly try again later.
Journal Article
Ultrafast all-optical tuning of direct-gap semiconductor metasurfaces
2017
Overview
Optical metasurfaces are regular quasi-planar nanopatterns that can apply diverse spatial and spectral transformations to light waves. However, metasurfaces are no longer adjustable after fabrication, and a critical challenge is to realise a technique of tuning their optical properties that is both fast and efficient. We experimentally realise an ultrafast tunable metasurface consisting of subwavelength gallium arsenide nanoparticles supporting Mie-type resonances in the near infrared. Using transient reflectance spectroscopy, we demonstrate a picosecond-scale absolute reflectance modulation of up to 0.35 at the magnetic dipole resonance of the metasurfaces and a spectral shift of the resonance by 30 nm, both achieved at unprecedentedly low pump fluences of less than 400 μJ cm
–2
. Our findings thereby enable a versatile tool for ultrafast and efficient control of light using light.
Metasurfaces are not adjustable after fabrication, and a critical challenge is to realise a technique of tuning their optical properties that is both fast and efficient. Here, Shcherbakov
et al.
realise an ultrafast tunable metasurface with picosecond-scale large absolute reflectance modulation at low pump fluences.
Publisher
Nature Publishing Group UK,Nature Publishing Group,Nature Portfolio
