Learning new chemistry and physics with THz light

Author

Schmuttenmaer, Charles A.

Author_Institution

Dept. of Chem., Yale Univ., New Haven, CT, USA

Volume

2

fYear

2005

fDate

19-23 Sept. 2005

Firstpage

401

Abstract

"Terahertz spectroscopy" emerged about 16 years ago with the demonstration that nearly single cycle pulses of far-infrared (FIR) radiation could be generated, sent through free space, and subsequently detected in the time-domain. Since then, THz spectroscopy has become an active area with studies ranging from condensed matter physics to gas-phase spectroscopy to biomedical imaging. This paper describes optical pump - THz probe measurements of transient photoconductivity in CdSe quantum dots, and transient photoconductivity in colloidal nanocrystalline TiO₂. THz emission experiments of ultrafast demagnetization experiments are described as well.

Keywords

II-VI semiconductors; cadmium compounds; electric variables measurement; infrared spectroscopy; measurement by laser beam; nanostructured materials; optical pumping; photoconductivity; semiconductor quantum dots; submillimetre wave measurement; submillimetre wave spectroscopy; titanium compounds; THz probe measurement; TiO₂; biomedical imaging; condensed matter physics; far-infrared radiation; gas-phase spectroscopy; optical pumps; quantum dots; single cycle pulses; terahertz spectroscopy; transient photoconductivity; Biomedical optical imaging; Chemistry; Finite impulse response filter; Optical pulse generation; Photoconductivity; Physics; Radiation detectors; Spectroscopy; Stimulated emission; Time domain analysis;

fLanguage

English

Publisher

ieee

Conference_Titel

Infrared and Millimeter Waves and 13th International Conference on Terahertz Electronics, 2005. IRMMW-THz 2005. The Joint 30th International Conference on

Print_ISBN

0-7803-9348-1

Type

conf

DOI

10.1109/ICIMW.2005.1572582

Filename

1572582