2010
DOI: 10.1063/1.3467526
|View full text |Cite
|
Sign up to set email alerts
|

Terahertz emission from InAs induced by photo-Dember effect: Hydrodynamic analysis and Monte Carlo simulations

Abstract: Terahertz emission from InAs excited by the femtosecond optical pulse is investigated. The hydrodynamic model is developed for the simplified analysis of the terahertz emission induced by the photo-Dember effect. The hydrodynamic model predicts that the amplitude of the transient photocurrent is proportional to the difference between the squared velocities of photoexcited electrons and holes. The predictions of the hydrodynamic model are compared to the results of the rigorous ensemble Monte Carlo simulations.… Show more

Help me understand this report

Search citation statements

Order By: Relevance

Paper Sections

Select...
2
1
1
1

Citation Types

0
39
0
1

Year Published

2012
2012
2024
2024

Publication Types

Select...
8

Relationship

1
7

Authors

Journals

citations
Cited by 49 publications
(40 citation statements)
references
References 42 publications
0
39
0
1
Order By: Relevance
“…The electromagnetic radiation is then calculated from the time derivative of current density. This is broadly the same general method used by a number of others in accounting for the terahertz radiation produced by ultrafast optical excitation of semiconductor surfaces [8][9][10][11][12][13][14][15][16]. Monte Carlo methods have superseded the analytical approach to surface generation of terahertz radiation, a point illustrated by the earlier analytical [17] and later Monte Carlo [13] modeling of Malevich.…”
Section: Modelmentioning
confidence: 99%
“…The electromagnetic radiation is then calculated from the time derivative of current density. This is broadly the same general method used by a number of others in accounting for the terahertz radiation produced by ultrafast optical excitation of semiconductor surfaces [8][9][10][11][12][13][14][15][16]. Monte Carlo methods have superseded the analytical approach to surface generation of terahertz radiation, a point illustrated by the earlier analytical [17] and later Monte Carlo [13] modeling of Malevich.…”
Section: Modelmentioning
confidence: 99%
“…В результате того, что подвижность электронов, как правило, выше подвижности дырок, в полупроводнике при поглощении оптического излуче-ния возникает пространственное разделение электронно-дырочных пар и, как следствие импульс тока, кото-рый генерирует ТГц излучение. Фотоэффект Дембера сильнее проявляется в полупроводниках с узкой за-прещенной зоной, например InAs или InN [17][18][19], а эффект ускорения электрон-дырочных пар встроенным электрическим полем -в полупроводниках с широкой запрещенной зоной, например GaAs..…”
Section: Introductionunclassified
“…The downward band bending is neglected in the hydrodynamic model of the photo-Dember effect developed in [20]. It is assumed that the potential is constant throughout the structure prior to photogeneration.…”
Section: Oscillations Initiated By the Photo-dember Effectmentioning
confidence: 99%
“…For the valence band, heavy, light, and split-off nonparabolic subbands are taken into account. The band structure and material parameters for GaAs and InAs are taken the same as in [19] and [20], respectively. The electron scattering mechanisms considered in the simulations include polar optical, inelastic deformation acoustic, intervalley, and ionized impurity scattering, as well as electron-electron and electron-hole interactions.…”
Section: Models Of Gaas and Inas Emittersmentioning
confidence: 99%
See 1 more Smart Citation