Terahertz two-photon quantum well infrared photodetector.

Schneider, H; Liu, H C; Winnerl, S; Song, C Y; Walther, M; Helm, M

Schneider, H; Liu, H C; Winnerl, S; Song, C Y; Walther, M; Helm, M.

Afiliação

Schneider H; Forschungszentrum Dresden Rossendorf, Institute of Ion Beam Physics and Materials Research, P O Box 510119, D-01314 Dresden, Germany. h.schneider@fzd.de

Opt Express ; 17(15): 12279-84, 2009 Jul 20.

Article em En | MEDLINE | ID: mdl-19654629

ABSTRACT

ABSTRACT

A two-photon detector based on intersubband transitions in GaAs/AlGaAs quantum wells operating in the Terahertz regime below the Reststrahlenband is reported. Resonantly enhanced optical nonlinearities enables sensitive quadratic detection at pJ pulse energies. We demonstrate its use in a quadratic autocorrelator for far-infrared picosecond pulses at around 7 THz.

Assuntos

Óptica e Fotônica; Elétrons; Interferometria/métodos; Lasers; Modelos Teóricos; Fótons; Física/métodos; Teoria Quântica; Semicondutores; Espectroscopia de Infravermelho com Transformada de Fourier; Fatores de Tempo

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Coleções: 01-internacional Base de dados: MEDLINE Assunto principal: Óptica e Fotônica Tipo de estudo: Prognostic_studies Idioma: En Revista: Opt Express Ano de publicação: 2009 Tipo de documento: Article

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