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Title: Evaluation of DAST and zinc telluride nonlinear crystals for efficient terahertz generation

Terahertz (THz) signal is generated from 4-N, N-dimethylamino-4’-N’-methyl-stilbazolium tosylate (i.e. DAST Crystal) and Zinc telluride (ZnTe) nonlinear crystals by employing 140 fs laser pulses at 800 nm with 80 MHz repetition rate. The semi insulating gallium arsenide photoconductive stripline antennas (gap =5 µm, length = 20 µm) is used as a Terahertz detector. The detected temporal profile of Terahertz radiation generated from DAST crystal is high as compared to ZnTe crystal in terms of amplitude. THz effective bandwidths of these crystals are extended up to 1.1 THz range. The potential of THz generation of DAST and ZnTe crystals are evaluated with respect to incident laser power.
Authors:
;  [1] ;
  1. Advanced Centre of Research in High Energy Materials, University of Hyderabad, Hyderabad, India-500046 (India)
Publication Date:
OSTI Identifier:
22488645
Resource Type:
Journal Article
Resource Relation:
Journal Name: AIP Conference Proceedings; Journal Volume: 1670; Journal Issue: 1; Conference: EIPT-2015: International conference on emerging interfaces of plasma science and technology, Ujjain (India), 9-10 Mar 2015; Other Information: (c) 2015 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; AMPLITUDES; ANTENNAS; AZOLES; COMPARATIVE EVALUATIONS; CRYSTALS; GALLIUM ARSENIDES; LASER RADIATION; LASERS; MHZ RANGE; NONLINEAR PROBLEMS; PHOTOCONDUCTIVITY; PULSED IRRADIATION; SIGNALS; THZ RANGE; ZINC; ZINC TELLURIDES