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Title: Laser pulse amplitude changes induced by terahertz waves under linear electro-optic effect

Changes in the amplitude of femtosecond laser pulses and in the energy of terahertz wave radiation induced during their co-propagation in ZnTe and GaP crystals are studied theoretically and experimentally. The results show that variation of the optical field amplitude leads to changes in the laser pulse energy and spectrum shift. We investigate the quantitative correlations between variations of the optical pulse energy, spectrum, phase and terahertz radiation energy. The values of laser pulse energy change and spectrum shift are proportional to the first time derivative of the magnitude of terahertz electric field, which enables coherent electro-optic detection. A simple and convenient calibration technique for terahertz energy detectors based on the correlation between laser and terahertz energy changes is proposed and tested.
Authors:
;  [1] ;  [2] ;  [1] ;  [3]
  1. Institute of Applied Physics, RAS, Nizhny Novgorod 603950 (Russian Federation)
  2. Faculty of Physics, M.V. Lomonosov Moscow State University, Moscow 119991 (Russian Federation)
  3. (Russian Federation)
Publication Date:
OSTI Identifier:
22262586
Resource Type:
Journal Article
Resource Relation:
Journal Name: Applied Physics Letters; Journal Volume: 104; Journal Issue: 15; Other Information: (c) 2014 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; CRYSTALS; ELECTRO-OPTICAL EFFECTS; ENERGY SPECTRA; GALLIUM PHOSPHIDES; LASERS; PULSES; ZINC TELLURIDES