Four-fold azimuthal angle dependence of the terahertz radiation power in (100) p-InAs under 1-T transverse magnetic field

Authors

Elmer Estacio ⋅ JP Institute for Molecular Science, Okazaki, Japan
Carlito Ponseca ⋅ JP Institute for Molecular Science, Okazaki, Japan
Shingo Ono ⋅ JP Institute for Molecular Science, Okazaki, Japan
Alex Quema ⋅ JP Institute for Molecular Science, Okazaki, Japan
Romeric Pobre ⋅ PH Physics Department, De La Salle University, Philippines
Reuben Quiroga ⋅ PH Physics Department, De La Salle University, Philippines
Hidetoshi Murakami ⋅ JP Institute of Laser Engineering, Osaka University, Japan
Hisashi Sumikura ⋅ JP Institute of Laser Engineering, Osaka University, Japan
Masahiko Tani ⋅ JP Institute of Laser Engineering, Osaka University, Japan
Nobuhiko Sarukura ⋅ JP Institute of Laser Engineering, Osaka University, Japan
Masanori Hangyo ⋅ JP Institute of Laser Engineering, Osaka University, Japan

Abstract

The azimuthal angle dependence of the terahertz (THz) radiation power of (100) p-type InAs under 1-T magnetic field is presented. Results show that although the dominant radiation mechanism is surge current, azimuthal angle-dependent radiation due to the nonlinear effect is also observed. The two-fold symmetry of the THz radiation for p-polarized excitation was modified to four-fold symmetry with the applied field. Even with no applied field, results exhibited four-fold symmetry for the s-polarized THz radiation. As the magnetic field-induced nonlinear optical susceptibility fails to account for this observation, a tentative explanation regarding a field-enhanced L-valley carrier scattering is proposed. The actual physical origin of these results is currently under investigation.

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Issue

2006: Proceedings of the 24th Samahang Pisika ng Pilipinas National Physics Congress

Article ID

SPP-2006-1A-03

Section

Instrumentation and Optics

Published

2006-10-25

How to Cite

[1]

E Estacio, C Ponseca, S Ono, A Quema, R Pobre, R Quiroga, H Murakami, H Sumikura, M Tani, N Sarukura, and M Hangyo, Four-fold azimuthal angle dependence of the terahertz radiation power in (100) p-InAs under 1-T transverse magnetic field, Proceedings of the Samahang Pisika ng Pilipinas 24, SPP-2006-1A-03 (2006). URL: https://proceedings.spp-online.org/article/view/SPP-2006-1A-03.