All-optically induced ultrafast photocurrents: beyond the instantaneous coherent response.
All-optically induced ultrafast photocurrents: beyond the instantaneous coherent response.
复制标题
全光感应超快光电流:超越瞬时相干响应
DOI:
10.1103/physrevlett.109.216601
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发表时间:
2012
影响因子:
8.6
通讯作者:
M. Bieler
中科院分区:
文献类型:
--
作者:
S. Priyadarshi;K. Pierz;M. Bieler
It is demonstrated that the noninstantaneous response of the optically induced coherent polarization tremendously influences the real-space shift of electronic charges in semiconductors. The possibility of coherently controlling this real-space shift with temporally nonoverlapping excitation pulses allows for the observation of a new type of shift current, which only exists for certain polarization-shaped excitation pulses and vanishes in the continuous-wave limit. In contrast to previously studied shift currents, the new current requires a phase mismatch between two orthogonal transition dipole moments and leads, within a nonlinear second-order description, to a tensor which is antisymmetric with respect to the order of the two exciting electric field amplitudes. These observations, which can even be made at room temperature and are expected to occur in a variety of semiconductor crystal classes, contribute to a better understanding of light-matter interaction involving degenerate bands. Thus, they are expected to prove important for future studies of coherent and nonlinear optical effects in semiconductors.
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影响因子:
3.7
作者:
H. T. Duc;J. Förstner;T. Meier
通讯作者:
H. T. Duc;J. Förstner;T. Meier
影响因子:
3.2
作者:
Bieler, M.;Pierz, K.;Siegner, U.
通讯作者:
Siegner, U.
影响因子:
3.7
作者:
S. Priyadarshi;K. Pierz;U. Siegner;P. Dawson;M. Bieler
通讯作者:
M. Bieler
DOI:
10.1088/0953-8984/12/34/201
发表时间:
2000
期刊:
Journal of Physics: Condensed Matter
影响因子:
--
作者:
Bradley A Foreman
通讯作者:
Bradley A Foreman
影响因子:
8.6
作者:
S. Priyadarshi;A. Racu;K. Pierz;U. Siegner;M. Bieler;H. T. Duc;J. Förstner;T. Meier
通讯作者:
T. Meier