Diffraction-Limited High-Power Single-Cycle Terahertz Pulse Generation in Prism-Cut LiNbO3for Precise Terahertz Applications
نویسندگان
چکیده
منابع مشابه
Generation of high-power terahertz pulses in a prism.
A compact, high-power emitter of half-cycle terahertz (THz) radiation is demonstrated. The device consists of an epitaxial InAs emitter upon a GaAs prism and produces THz pulses that are 20 times more powerful than those from conventional planar InAs emitters. This improvement is a direct result of reorienting the transient THz dipole such that its axis is not perpendicular to the emitting surf...
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Diffraction is the ultimate limit at which details of objects can be resolved in conventional optical spectroscopy and imaging systems. In the THz spectral range, spectroscopy systems increasingly rely on ultra-broadband radiation (extending over more 5 octaves) making a great challenge to reach resolution limited by diffraction. Here, we propose an original easy-to-implement wavefront manipula...
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The great difficulty of producing high intensity radiation in the terahertz (THz) spectral region by conventional electronics has stimulated interest in development of sources based on photonics. Optical rectification in lithium niobate is an attractive approach, because it supports high generation efficiencies, uses low cost, bulk LN crystals, and is powered by common Yb-doped lasers at wavele...
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With state-of-the-art amplifier laser systems one easily reaches pulse energies sufficient to ionize atoms and molecules in focused beams. If this is done in a gaseous medium at ambient pressure (e.g., in air), a plasma with a length of a few hundred μm and a diameter of up to 100 μm can be produced by a 1 kHz 150 fs Ti:sapphire laser system with laser pulse energies in the 500 μJ regime. The p...
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It is shown that optical rectification in biased quantum wells using specially shaped optical pulses can be used to generate quasi-half-cycle THz electromagnetic pulses. Namely, we investigate THz generation by pulses incorporating a rapid pi phase shift. We further explore the potential of this scheme for high-repetition-rate quasi-half-cycle THz pulse generation.
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ژورنال
عنوان ژورنال: Journal of the Optical Society of Korea
سال: 2014
ISSN: 1226-4776
DOI: 10.3807/josk.2014.18.1.060