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Terahertz generation in poled polymers
2005 Quantum Electronics and Laser Science Conference, 2005THz radiation power dependence on pump laser spot size was explored using a poled polymer and the electro-optic coefficient of the polymer was estimated. THz spectroscopy on several UV-curable passive polymers was also carried out.
H.Y. Liang +7 more
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Terahertz generation in photonic crystals
SPIE Proceedings, 2004We describe a tunable, narrow-band, coherent THz radiation source based on parametric down-conversion in a photonic crystal. Our design is based on down-conversion mixing and a local-field enhancement mechanism that is available by tuning each of the two driving laser fields either to band-edge or to a defect mode in the band gap.
Joseph W. Haus +7 more
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Generation of shaped terahertz pulses
35th International Conference on Infrared, Millimeter, and Terahertz Waves, 2010Phase-locked THz pulse pairs and tunable narrowband THz pulses are generated by means of femtosecond optical pulse shaping combined with optical rectification in ZnTe crystal. THz spectra as narrow as 140 GHz and tunable between 0.5 and 2.5 THz are reported.
Vidal, S. +3 more
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Generation and Detection of Terahertz Radiation
2012Methods for generating and detecting terahertz (THz) radiation are reviewed with emphasis on the physical mechanisms involved as well as the typical characteristics of the generated radiation. We first discuss methods for generating and detecting broadband pulses of THz radiation, which are based on optical femtosecond laser systems. The second section
Joshua R. Freeman +2 more
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Scaling issues in terahertz generation
LEOS '95. IEEE Lasers and Electro-Optics Society 1995 Annual Meeting. 8th Annual Meeting. Conference Proceedings, 2002In this paper, we first describe our efforts to design a high-energy THz emitter based on optical rectification in electro-optic crystals. Next, we describe pump-probe experiments in biased photoconductors which are designed to study the role of screening of the applied bias field, resulting from the space charge field induced by separating carriers ...
T.S. Clement +3 more
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Chinese Physics B
Abstract Enhanced terahertz wave generation via a Stokes cascade process has been demonstrated using picosecond pulse pumped terahertz parametric generation at 1 kHz repetition rate. Clear cascade saturation of terahertz output was observed, and the corresponding cascade-Stokes spectra were analyzed.
Jingxi 敬喜 Zhang 张 +7 more
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Abstract Enhanced terahertz wave generation via a Stokes cascade process has been demonstrated using picosecond pulse pumped terahertz parametric generation at 1 kHz repetition rate. Clear cascade saturation of terahertz output was observed, and the corresponding cascade-Stokes spectra were analyzed.
Jingxi 敬喜 Zhang 张 +7 more
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Terahertz generation in optical amplifiers
SPIE Proceedings, 2010We describe a fiber-optics based system for the generation of optical frequency comb using amplified spontaneous emissions from a semiconductor optical amplifier as signal source. The continuous wave spectrum from the semiconductor optical amplifier range from 1480nm to 1680nm.
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Generating millimeter and terahertz waves
IEEE Microwave Magazine, 2009Research on millimeter waves and/or terahertz waves, which cover the frequency range from 30 GHz to 10 THz, has lately increased since the nature of these electromagnetic waves is well suited to spectroscopic sensing as well as ultrabroadband wireless communications.
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Terahertz wave generation and terahertz reference transfer
2014 39th International Conference on Infrared, Millimeter, and Terahertz waves (IRMMW-THz), 2014Motohiro Kumagai +6 more
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Milliwatt terahertz harmonic generation from topological insulator metamaterials
Light: Science and Applications, 2022Klaas-Jan Tielrooij +2 more
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