Semiconductor saturable absorbers for ultrafast terahertz signals
Hoffmann MC, Turchinovich D (2010)
Applied Physics Letters 96(15).
Zeitschriftenaufsatz
| Veröffentlicht | Englisch
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Autor*in
Hoffmann, Matthias C.;
Turchinovich, DmitryUniBi
Einrichtung
Abstract / Bemerkung
We demonstrate saturable absorber behavior of n-type semiconductors GaAs, GaP, and Ge in the terahertz (THz) frequency range at room temperature using nonlinear THz spectroscopy. The saturation mechanism is based on a decrease in electron conductivity of semiconductors at high electron momentum states, due to conduction band nonparabolicity and scattering into satellite valleys in strong THz fields. Saturable absorber parameters, such as linear and nonsaturable transmission, and saturation fluence, are extracted by fits to a classic saturable absorber model. Further, we observe THz pulse shortening, and an increase in the group refractive index of the samples at higher THz pulse peak fields.
Erscheinungsjahr
2010
Zeitschriftentitel
Applied Physics Letters
Band
96
Ausgabe
15
ISSN
0003-6951
eISSN
1077-3118
Page URI
https://pub.uni-bielefeld.de/record/2983602
Zitieren
Hoffmann MC, Turchinovich D. Semiconductor saturable absorbers for ultrafast terahertz signals. Applied Physics Letters. 2010;96(15).
Hoffmann, M. C., & Turchinovich, D. (2010). Semiconductor saturable absorbers for ultrafast terahertz signals. Applied Physics Letters, 96(15). https://doi.org/10.1063/1.3386542
Hoffmann, Matthias C., and Turchinovich, Dmitry. 2010. “Semiconductor saturable absorbers for ultrafast terahertz signals”. Applied Physics Letters 96 (15).
Hoffmann, M. C., and Turchinovich, D. (2010). Semiconductor saturable absorbers for ultrafast terahertz signals. Applied Physics Letters 96.
Hoffmann, M.C., & Turchinovich, D., 2010. Semiconductor saturable absorbers for ultrafast terahertz signals. Applied Physics Letters, 96(15).
M.C. Hoffmann and D. Turchinovich, “Semiconductor saturable absorbers for ultrafast terahertz signals”, Applied Physics Letters, vol. 96, 2010.
Hoffmann, M.C., Turchinovich, D.: Semiconductor saturable absorbers for ultrafast terahertz signals. Applied Physics Letters. 96, (2010).
Hoffmann, Matthias C., and Turchinovich, Dmitry. “Semiconductor saturable absorbers for ultrafast terahertz signals”. Applied Physics Letters 96.15 (2010).
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