Characterization and application of DAST at THz frequency

Author

Han, P.Y. ; Tani, M. ; Pan, F. ; Zhang, X.-C.

Author_Institution

Dept. of Phys., Rensselaer Polytech. Inst., Troy, NY, USA

fYear

2000

fDate

7-12 May 2000

Firstpage

556

Lastpage

557

Abstract

Summary form only given.The organic ionic salt crystal DAST is an extremely promising material with high nonlinear optical coefficient of 840 pm/V at 1542 nm and electro-optical (EO) coefficient of 75 pm/V at 820 nm. DAST has been used to generate broadband THz radiation by optical rectification. in addition, low dielectric constants of DAST allows high-speed EO modulation and detection. DAST has been used to monitor mm wave field by interferometric methods. In this paper, we first report the dielectric constant of DAST at THz frequency. Then we employ DAST as an EO sensor to detect THz pulses using a novel scheme, with both waveform and spectrum information obtained.

Keywords

electro-optical effects; electro-optical modulation; high-speed optical techniques; optical materials; optical phase matching; organic compounds; submillimetre wave detectors; DAST; THz frequency; THz pulse detection; broadband THz radiation; curve fitting; dielectric constant; electro-optical coefficient; electro-optical sensor; high nonlinear optical coefficient; optical rectification; organic ionic salt crystal; phase matching; reflectivity; Crystalline materials; Dielectric constant; Dielectric materials; Frequency; High speed optical techniques; Nonlinear optics; Optical interferometry; Optical modulation; Optical sensors; Ultraviolet sources;

fLanguage

English

Publisher

ieee

Conference_Titel

Lasers and Electro-Optics, 2000. (CLEO 2000). Conference on

Conference_Location

San Francisco, CA, USA

Print_ISBN

1-55752-634-6

Type

conf

DOI

10.1109/CLEO.2000.907383

Filename

907383