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Impact ionization in InSb probed by terahertz pump—terahertz probe spectroscopy
Open accessAbstract
Picosecond carrier dynamics in indium antimonide (InSb) following excitation by below band gap broadband far-infrared radiation was investigated at 200 and 80 K. Using a THz-pump/THz-probe scheme with pump THz fields of 100 kV/cm and an intensity of $100\text{ }\text{MW}/{\text{cm}}^{2}$, we observed carrier heating and impact ionization dynamics. The number of carriers produced exceeds ${10}^{16}\text{ }{\text{cm}}^{\ensuremath{-}3}$, corresponding to a change in carrier density $\ensuremath{\Delta}N/N$ of 700% at 80 K. The onset of a well-defined absorption peak at 1.2 THz is an indication of changes in longitudinal optical (LO) and longitudinal acoustic (LA) phonon populations due to cooling of the hot electrons.
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Cites
Free-space electro-optic sampling of terahertz beams
Wu, Q., & Zhang, X.-C. (1995) · Applied Physics Letters · doi:10.1063/1.114909 · Cited by 993
Cited by
Carrier dynamics in semiconductors studied with time-resolved terahertz spectroscopy
Ulbricht, R., Hendry, E., Shan, J., Heinz, T. F., & Bonn, M. (2011) · Reviews of Modern Physics · doi:10.1103/revmodphys.83.543 · Cited by 1,293
Hirori, H., Doi, A., Blanchard, F., & Tanaka, K. (2011) · Applied Physics Letters · doi:10.1063/1.3560062 · Cited by 859
The 2023 terahertz science and technology roadmap
Leitenstorfer, A., Moskalenko, A. S., Kampfrath, T., Kono, J., Castro-Camus, E., Peng, K., Qureshi, N., Turchinovich, D., Tanaka, K., Markelz, A. G., et al. (2023) · Journal of Physics D: Applied Physics · doi:10.1088/1361-6463/acbe4c · Cited by 514
Self-citationBaxter, J. B., & Guglietta, G. W. (2011) · Analytical Chemistry · doi:10.1021/ac200907z · Cited by 477
Intense ultrashort terahertz pulses: generation and applications
Hoffmann, M. C., & Fülöp, J. A. (2011) · Journal of Physics D: Applied Physics · doi:10.1088/0022-3727/44/8/083001 · Cited by 359
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Metadata
- Authors
- Hoffmann, M. C., Hebling, J., Hwang, H. Y., Yeh, K.-L., & Nelson, K. A.
- Venue
- Physical Review B
- Publisher
- American Physical Society (APS)
- Published
- 2009-04-06
- Volume
- 79
- Issue
- 16
- ISSN
- 1098-0121 (ISSN-L)
- 1550-235X
- OpenAlex
- W2142177870
- Cited by
- 223
- References
- 1
- FWCI
- 16.37
- Type
- journal article
- Language
- en
- Open access
- bronze
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- Hoffmann, M. C., Hebling, J., Hwang, H. Y., Yeh, K.-L., & Nelson, K. A. (2009). Impact ionization in InSb probed by terahertz pump—terahertz probe spectroscopy. Physical Review B. https://doi.org/10.1103/physrevb.79.161201
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