Global Resource Navigation:

Skip to Main Content

Apply to the University of Wyoming apply now

Global Resource Navigation

Visit Campus
Download UW Viewbook
Give to UW
Menu
Contact Us

MSE Program

Physical Science Bldg. 210

Department 3905

1000 E. University Ave.

Laramie, WY 82071

Phone: 307.766.2862

Fax: 307.766.2652

Email: mse@uwyo.edu

Ultrafast Spectroscopy of Excitons in Low-Dimensional Metallic Systems

February 28, 2018

Date: Wednesday, February 28

Time: 12pm

Location: EN 3076

Speaker: Henry Wladkowski, Department of Physics and Astronomy

Title of Talk: Ultrafast Spectroscopy of Excitons in Low-Dimensional Metallic Systems

Excitons are well known quasi-particles in semiconductors, but are only observed in metals under quantum confinement.  Due to their rarity, the internal energy structure, which is predicted to be hydrogenic in character, of excitons in metals is not yet fully explored.  Within metallic single-wall carbon nanotubes, which are metals under 1D quantum confinement, excitons are known to dominate optical processes and have predicted internal energy transitions on the order of meV.  These energies correspond to a region of the electromagnetic spectrum known as terahertz, a traditionally difficult part of the spectrum to generate and detect with no previous spectroscopy equipment available at the University of Wyoming.  With that motivation to establish a terahertz spectroscopy system we set out to make it a reality diagnostic and preliminary scientific measurements of many samples.  From there we have plans to expand the system's capabilities in order to probe the internal energy structure of metallic excitons.


Share This Page:

Contact Us

MSE Program

Physical Science Bldg. 210

Department 3905

1000 E. University Ave.

Laramie, WY 82071

Phone: 307.766.2862

Fax: 307.766.2652

Email: mse@uwyo.edu

1000 E. University Ave. Laramie, WY 82071
UW Operators (307) 766-1121 | Contact Us | Download Adobe Reader

Twitter Icon Youtube Icon Instagram Icon Facebook Icon

Accreditation | Virtual Tour | Emergency Preparedness | Employment at UW | Gainful Employment | Privacy Policy | Harassment & Discrimination | Accessibility Accessibility information icon