Optical Metamaterials: Negative Refraction, Super-lens and Plasmon Lasers

15 01/2014

Wednesday, 15 Jan. 2014, 09:36 - Mon, 20 Jan. 2014, 23:36

Presenter: Xiang Zhang
Host: Philip Walther
Where: Ernst-Mach Lecture Hall

      

 

 

The Vienna Doctoral Programme on Complex Quantum Systems

invites to a

SEMINAR TALK

by

Xiang Zhang

NSF Nano-scale Science and Engineering Center (NSEC)

University of California, Berkeley

 

Optical Metamaterials:

Negative Refraction, Super-lens and Plasmon Lasers

 

 

Recent theory predicted a new class of photonic composite materials with its properties derived from the structure rather than chemical compositions, which promise unprecedented electromagnetic properties that do not exist in nature such as optical magnetism and negative refraction. For example, a superlens made of metamaterials can break the fundamental diffraction limit in optical imaging, which may have profound impact on a wide range of applications such as nano-scale photonics, electronics manufacturing, and biomedical imaging.

 

I’ll discuss recent progress that demonstrated such intriguing physics. We created the first bulk optical metamaterials that show the negative refraction. We demonstrated the superlens and optical cloak using carefully designed plasmonic material dispersions. Scaling down photonics beyond the diffraction limit is the key to driving the exponential growth of information technology. I will discuss new strategies for nano-scale photonics including indefinite cavity, plasmonic waveguide and lasers--a coherent light at molecular scale. Finally, I will present 22nm superlens lithography technology that may transform the next generation of nano-manufacturing.

 

References:

1.        Jason Valentine, Shuang Zhang, Thomas Zentgraf, Erick Ulin-Avila, Dentcho A Genov, Guy Bartal and Xiang Zhang, "Three Dimensional Optical Metamaterial Exhibiting Negative Refractive Index", Nature, Vol.455, 376, 2008.

2.        Rupert F. Oulton, Volker J. Sorger, Thomas Zentgraf, Ren-Min Ma, Christopher Gladden, Lun Dai, Guy Bartal & Xiang Zhang, "Plasmon lasers at deep subwavelength scale" Nature, Vol. 461, 629, 2009.

3.         Xiaobo Yin, Ziliang Ye, Junsuk Rho, Yuan Wang, Xiang Zhang, "Photonic Spin Hall Effect at Metasurfaces", Science, 339, 1405-1407. 2013

 

 

 

Monday, January 20th, 2014

17:30 s.t.

 

Ernst Mach Hörsaal, 2nd floor

Boltzmanngasse 5, 1090 Vienna

The seminar talk will be preceded by a CoQuS Student talk at 17:00 s.t.

on
 
"Growing of (thorium-doped) calcium fluoride crystals for a solid-state nuclear clock"
 
by
 
Matthias Schreitl
 
Hosted by: Philip Walther