The THz-radiation from a femtosecond-laser-irradiated
InAs is investigated up to 14 T by use of 15T-CSM. We found that
the power of THz-radiation exhibit anomalous magnetic-field dependence,
including saturation, decrease, and recovery up to 14 T. Moreover,
the radiation spectrum possessed a clear periodic structure over
6 T, possibly due to the differently phased radiation from different
holes. These experimental findings imply there is rich, undiscovered
physics to be explored. Moreover, this new information should
be helpful for the design of THz emitters for new applications.
|
| Institute
for Molecular Science: |
Hideyuki Ohtake,
Hidetoshi Murakami, Nobuhiko Sarukura |
| IMR, Tohoku University
: |
Gen Nishijima, Kazuo Watanabe |
| Reference : |
Hideyuki Ohtake, Shingo Ono, Masahiro
Sakai, Zhenlin Liu, Takeyo Tsukamoto, Nobuhiko Sarukura,
"Saturation of THz-radiation power
from femtosecond-laser-irradiated InAs in a high magnetic field",
Appl. Phys. Lett. 76 (2000) 1398-1400. |
|
