Abstract

Terahertz (THz) imaging is currently based on linear effects, but there is great interest on how nonlinear effects induced by terahertz radiation could be exploited to provide extra information that is unobtainable by conventional imaging schemes. In particular, at field strengths on the order of 100  kVcm1 to 1  MVcm1, transmission properties inside semiconductor materials are largely affected at the picosecond time-scale, which raise the prospect of interesting nonlinear imaging applications at THz frequencies. Here, we experimentally investigate a method to map the two-dimensional nonlinear near-field distribution of an intense THz pulse passing through a thin film-doped semiconductor. By inserting a metamaterial structure between the electro-optic sensor and the doped film, the nonlinear near-field dynamics shows a different and enhanced contrast of the sample when compared to its linear counterpart.

© 2018 Optical Society of America

Full Article  |  PDF Article
OSA Recommended Articles
Observation of crossover from intraband to interband nonlinear terahertz optics

X. Chai, X. Ropagnol, A. Ovchinnikov, O. Chefonov, A. Ushakov, C. M. Garcia-Rosas, E. Isgandarov, M. Agranat, T. Ozaki, and A. Savel’ev
Opt. Lett. 43(21) 5463-5466 (2018)

Giant self-induced transparency of intense few-cycle terahertz pulses in n-doped silicon

O. V. Chefonov, A. V. Ovchinnikov, S. A. Romashevskiy, X. Chai, T. Ozaki, A. B. Savel’ev, M. B. Agranat, and V. E. Fortov
Opt. Lett. 42(23) 4889-4892 (2017)

Semiconductor terahertz modulator arrays: the size and edge effect

Tianlong Wen, Chong Zhang, Xiaochen Zhang, Yulong Liao, Quanjun Xiang, Qiye Wen, Dainan Zhang, Yuanpeng Li, Huaiwu Zhang, Yulan Jing, and Zhiyong Zhong
Opt. Lett. 43(13) 3021-3024 (2018)

References

You do not have subscription access to this journal. Citation lists with outbound citation links are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription

Cited By

You do not have subscription access to this journal. Cited by links are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription

Figures (5)

You do not have subscription access to this journal. Figure files are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription

Metrics

You do not have subscription access to this journal. Article level metrics are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription