Excitation fluence dependence of terahertz radiation mechanism from femtosecond-laser-irradiated InAs under magnetic field

Authors

  • Hiroshi Takahashi Institute for Molecular Science, Okazaki, Japan and Department of Photo Science, The Graduate University for Advanced Studies, Japan
  • Alex Quema Institute for Molecular Science, Okazaki, Japan and Physics Department, De La Salle University, Philippines
  • Shingo Ono Institute for Molecular Science, Okazaki, Japan and Department of Photo Science, The Graduate University for Advanced Studies, Japan
  • Nobuhiko Sarukura Institute for Molecular Science, Okazaki, Japan and Department of Photo Science, The Graduate University for Advanced Studies, Japan

Abstract

The excitation fluence and magnetic field dependence of terahertz (THz) radiation power from InAs is investigated. At low excitation fluence, an enhancement of the THz-radiation power is observed independent of the magnetic-field direction. As the excitation fluence is increased, a crossover of terahertz radiation mechanism is observed. At excitation fluence above this crossover, the radiation power is either enhanced or reduced depending on the magnetic-field direction. These results are explained by considering the different THz-radiation mechanisms from the InAs surface with or without photoexcited carrier screening.

SPP 2003 Proceedings Cover

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Published

2003-10-22

Issue

2003: Proceedings of the 21st Samahang Pisika ng Pilipinas Physics Congress

Section

Optics and Photonics

License

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Upon acceptance of their manuscript, the Authors further agree to grant SPP the non-exclusive, worldwide, and royalty-free rights to record, edit, copy, reproduce, publish, distribute, and use all or part of the manuscript for any purpose, in any media now existing or developed in the future, either individually or as part of a collection.
All other associated economic and moral rights as granted by the Intellectual Property Code of the Philippines are maintained by the Authors.

How to Cite

[1]
“Excitation fluence dependence of terahertz radiation mechanism from femtosecond-laser-irradiated InAs under magnetic field”, Proc. SPP, vol. 21, no. 1, pp. SPP–2003, Oct. 2003, Accessed: Mar. 25, 2026. [Online]. Available: https://proceedings.spp-online.org/article/view/SPP-2003-1J-01