Person
Elsie Barakat
This person is no longer with EPFL
Related publications (24)
Experimental investigation of the propagation properties of Bloch surface waves on dielectric multilayer platform
Hans Peter Herzig, Elsie Barakat, Richa Dubey
Background: The periodic dielectric multilayers sustaining Bloch surface waves have been proposed as a platformfor the sensing applications and the two dimensional integrated optics. In this paper, we present the experimental and theoretical investigation ...
2017Near-field investigation of Bloch surface wave based 2D optical components
Hans Peter Herzig, Myun Sik Kim, Elsie Barakat, Richa Dubey, Babak Vosoughi Lahijani
We study the Bloch surface wave based nano-thin 2D optical components. The 2D elements are fabricated on the dielectric multilayer platform which sustains the Bloch surface waves. Such a platform is considered as a novel foundation for planar integrated op ...
Spie-Int Soc Optical Engineering2017Near-field characterization of a Bloch-surfacewave-based 2D disk resonator
Hans Peter Herzig, Elsie Barakat, Richa Dubey, Babak Vosoughi Lahijani
We present, to the best of our knowledge, the first experimental investigation of a two-dimensional disk resonator on a dielectric multilayer platform sustaining Bloch surface waves. The disk resonator has been patterned into a few tens of nanometer thin ( ...
Optical Society of America2016Near-field characterization of 2D disk resonator on Bloch surface wave platform
Hans Peter Herzig, Myun Sik Kim, Elsie Barakat, Richa Dubey
We experimentally and theoretically investigate the characteristics of a two-dimensional (2D) disk resonator, which is fabricated on a Bloch surface wave platform. Such a platform is exploited to manipulate the surface waves by patterning nano-thin 2D opti ...
2016Exotic optical elements generating 2D surface waves
Hans Peter Herzig, Myun Sik Kim, Elsie Barakat, Richa Dubey
We introduce exotic optical elements for 2D surface wave systems hosting Bloch surface waves (BSWs). First, we will study a 2D non-diffracting beam, second, a 2D array of the optical bottle beam via the Talbot effect and third, tight light confinement like ...
2016Nano-Thin 2D Axicon Generating Nondiffracting Surface Waves
Hans Peter Herzig, Myun Sik Kim, Elsie Barakat, Richa Dubey
We investigate nondiffracting surface waves. On top of the Bloch surface wave platform, a 60-nm-thick TiO2 isosceles triangle serves as a 2D axicon. Scanning near-field microscopy measurements verify nondiffracting surface beam properties. ...
Ieee2016Optics in 2D, Bloch surface wave phenomena and applications
Hans Peter Herzig, Myun Sik Kim, Elsie Barakat, Richa Dubey
Nano-photonics, where optical structures can manipulate light at the sub-wavelength scale, is making important advances towards optical communications, imaging and sensing. A novel platform suitable for fundamental investigations of light propagation throu ...
Ieee2016Real-time Protein Aggregation Monitoring based on a Simultaneous Light Scattering Investigation and a Bloch Surface Wave-based Approach
Hans Peter Herzig, Elsie Barakat, Sara Santi
We present a study of the dynamics of protein aggregation using a Bloch surface wave (BSW) label-free sensing scheme. In a previous work, we demonstrated the ability to detect the early dynamic events of fibrillogenesis of amyloid beta-peptides (A beta), l ...
Spie-Int Soc Optical Engineering2015Near Field Investigation of Bloch Surface Based Platform for 2D Integrated Optics
Hans Peter Herzig, Elsie Barakat, Richa Dubey
Dielectric multilayers sustaining Bloch surface waves (BSWs) are considered as a novel platform for two dimensional (2D) integrated optics. The dielectric platform is exploited to manipulate surface waves by patterning 2D dielectric optical components on t ...
2015Two-dimensional polymer grating and prism on Bloch surface waves platform
Hans Peter Herzig, Elsie Barakat, Libo Yu, Joab Di Francesco
A one-dimensional photonic crystal sustaining Bloch Surface Waves (BSWs) is used as a platform for two-dimensional integrated optics. The dielectric platform shows low loss, long propagation distance and high surface field enhancement. In order to study th ...
Optical Society of America2015