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Nonlinear ultrafast modulation of the optical absorption of few cycle terahertz pulses in n-doped semiconductors
- Publication Year :
- 2009
-
Abstract
- We use an open-aperture Z-scan technique to show how intense few-cycle terahertz pulses can experience a nonlinear bleaching of absorption in an n-doped semiconductor due to terahertz-electric-field-driven intervalley scattering of electrons in the conduction band. Coherent detection of the transmitted terahertz pulse waveform also allows the nonlinear conductivity dynamics to be followed with sub-picosecond time resolution. Both the Z-scan and time-domain results are found to be in agreement with our theoretical analysis.<br />Comment: Submitted to Physical Review B, 16 pages, 3 figures, 1 table
- Subjects :
- Physics - Optics
Subjects
Details
- Database :
- arXiv
- Publication Type :
- Report
- Accession number :
- edsarx.0905.0278
- Document Type :
- Working Paper
- Full Text :
- https://doi.org/10.1103/PhysRevB.79.193204