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High-harmonic generation in a quantum electron gas trapped in a nonparabolic and anisotropic well

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High-harmonic generation in a quantum electron gas trapped in a nonparabolic and anisotropic well

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Título High-harmonic generation in a quantum electron gas trapped in a nonparabolic and anisotropic well
Autor Hurst, Jérôme
Lévêque-Simon, Kévin
Hervieux, Paul-Antoine
Manfredi, Giovanni
Haas, Fernando
Abstract An effective self-consistent model is derived and used to study the dynamics of an electron gas confined in a nonparabolic and anisotropic quantum well. This approach is based on the equations of quantum hydrodynamics, which incorporate quantum and nonlinear effects in an approximate fashion. The effective model consists of a set of six coupled differential equations (dynamical system) for the electric dipole and the size of the electron gas. Using this model we show that: (i) high harmonic generation is related to the appearance of chaos in the phase space, as attested to by related Poincar´e sections; (ii) higher order harmonics can be excited efficiently and with relatively weak driving fields by making use of chirped electromagnetic waves.
Contido em Physical review. B, Condensed matter and materials physics. Woodbury. Vol. 93, no. 20 (May 2016), 205402, 9 p.
Assunto Gás de elétrons
Hidrodinamica
Semicondutores
Origem Estrangeiro
Tipo Artigo de periódico
URI http://hdl.handle.net/10183/142525
Arquivos Descrição Formato
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