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Wavelength scaling ...
Wavelength scaling of terahertz pulse energies delivered by two-color air plasmas
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- Nguyen, Alisée (author)
- Le Commissariat à l’Énergie Atomique et aux Énergies Alternatives (CEA),The French Alternative Energies and Atomic Energy Commission (CEA)
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- Kaltenecker, K. J. (author)
- Danmarks Tekniske Universitet,Technical University of Denmark
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- Delagnes, J. C. (author)
- Université de Bordeaux,University of Bordeaux
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- Zhou, Binbin (author)
- Danmarks Tekniske Universitet,Technical University of Denmark
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- Cormier, E. (author)
- Université de Bordeaux,University of Bordeaux
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- Fedorov, N. (author)
- Université de Bordeaux,University of Bordeaux
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- Bouillaud, R. (author)
- Université de Bordeaux,University of Bordeaux
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- Descamps, D. (author)
- Université de Bordeaux,University of Bordeaux
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- Thiele, Illia, 1989 (author)
- Chalmers tekniska högskola,Chalmers University of Technology
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- Skupin, Stefan (author)
- Université de Lyon
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- Jepsen, P. U. (author)
- Danmarks Tekniske Universitet,Technical University of Denmark
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- Bergé, Luc (author)
- Le Commissariat à l’Énergie Atomique et aux Énergies Alternatives (CEA),The French Alternative Energies and Atomic Energy Commission (CEA)
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(creator_code:org_t)
- 2019
- 2019
- English.
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In: Optics Letters. - 0146-9592 .- 1539-4794. ; 44:6, s. 1488-1491
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https://doi.org/10.1...
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Abstract
Subject headings
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- We address the long-standing problem of anomalous growth observed in the terahertz (THz) energy yield from air plasmas created by two-color laser pulses, as the fundamental wavelength λ 0 is increased. Using two distinct optical parametric amplifiers (OPAs), we report THz energies scaling like λ α0 with large exponents 5.6 ≤ α ≤ 14.3, which departs from the growth in λ 20 expected from photocurrent theory. By means of comprehensive 3D simulations, we demonstrate that the changes in the laser beam size, pulse duration, and phase-matching conditions in the second-harmonic generation process when tuning the OPA’s carrier wavelength can lead to these high scaling powers. The value of the phase angle between the two colors reached at the exit of the doubling crystal turns out to be crucial and even explains non-monotonic behaviors in the measurements.
Subject headings
- NATURVETENSKAP -- Fysik -- Acceleratorfysik och instrumentering (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Accelerator Physics and Instrumentation (hsv//eng)
- NATURVETENSKAP -- Fysik -- Atom- och molekylfysik och optik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Atom and Molecular Physics and Optics (hsv//eng)
- NATURVETENSKAP -- Fysik -- Annan fysik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Other Physics Topics (hsv//eng)
Publication and Content Type
- art (subject category)
- ref (subject category)
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- By the author/editor
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Nguyen, Alisée
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Kaltenecker, K. ...
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Delagnes, J. C.
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Zhou, Binbin
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Cormier, E.
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Fedorov, N.
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show more...
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Bouillaud, R.
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Descamps, D.
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Thiele, Illia, 1 ...
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Skupin, Stefan
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Jepsen, P. U.
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Bergé, Luc
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show less...
- About the subject
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- NATURAL SCIENCES
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NATURAL SCIENCES
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and Physical Science ...
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and Accelerator Phys ...
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- NATURAL SCIENCES
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NATURAL SCIENCES
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and Physical Science ...
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and Atom and Molecul ...
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- NATURAL SCIENCES
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NATURAL SCIENCES
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and Physical Science ...
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and Other Physics To ...
- Articles in the publication
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Optics Letters
- By the university
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Chalmers University of Technology