SEM, Chemical Etching and THz Wave Generation of 4-Dimethylamino-N-methyl-4-stilbazolium Tosylate (DAST) Single Crystals

Journal Article · Fri Dec 15 00:00:00 EST 2017 · Crystallography Reports

DOI:https://doi.org/10.1134/S1063774517070215· OSTI ID:22758285

Sun, Qing; Teng, Bing; Cao, Lifeng; Ji, Shaohua; Zhong, Degao; Hao, Lun; Xu, Han; Zhao, Yingtao ^[1]

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1. Qingdao University, College of Physics Science (China)

The 4-dimethylamino-N-methyl-4-stilbazolium tosylate (DAST) crystal which was candidate for generating and detecting terahertz (THz) wave was grown by slope nucleation method (SNM). The functional groups of DAST were identified by Fourier Transform Infrared (FTIR) studies. Macroscopic steps and streaks on the (001) face were found by scanning electron microscope (SEM). Different patterns of etch pits under different chemical etchants were studied by optical microscope. Widely tunable THz waves ranging from 0.38 to 18.10 THz were generated from 0.5 mm-thick DAST crystal. The maximum output energy was 345.4 nJ/pulse at 3.39 THz and the conversion efficiency was 8.44 × 10{sup –5}.

• OSTI ID: 22758285
• Journal Information: Crystallography Reports, Vol. 62, Issue 7; Other Information: Copyright (c) 2017 Pleiades Publishing, Inc.; Country of input: International Atomic Energy Agency (IAEA); ISSN 1063-7745
• Country of Publication: United States
• Language: English

Related Subjects

75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
37 INORGANIC
ORGANIC
PHYSICAL AND ANALYTICAL CHEMISTRY
CONVERSION
EFFICIENCY
ETCHING
FOURIER TRANSFORM SPECTROMETERS
INFRARED SPECTRA
MONOCRYSTALS
NUCLEATION
OPTICAL MICROSCOPES
SCANNING ELECTRON MICROSCOPY
SPECTROSCOPY