太赫兹能用在探测隐形飞机上吗南京大学国家实验室在太赫 ...

以前我小组里一个中科院博士就是做太赫兹的 他说太赫兹的探测能力很强 但是要解决 发射和衰减问题
现在发射问题看来能解决了
就是不知道对隐形飞机探测能力如何 特别是对四代机



南京大学国家微结构实验室吴兴龙小组在2011年1月16日的《Nature Nanotechnology》
上的成果在微结构的太赫兹发射的道路上迈出了极其关键的一步。
以下是工作的摘要：
The discovery of efficient sources of terahertz radiation has been exploited
in imaging applications1, and developing a nanoscale terahertz source could
lead to additional applications. High-frequency mechanical vibrations of
charged nanostructures can lead to radiative emission, and vibrations at
frequencies of hundreds of kilohertz have been observed from a ZnO nanobelt
under the influence of an alternating electric field. Here, we observe
mechanical resonance and radiative emission at ~0.36 THz from core–shell ZnO
mesocrystal microspheres excited by a continuous green-wavelength laser. We
find that ~0.016% of the incident power is converted into terahertz radiation,
which corresponds to a quantum efficiency of ~33%, making the ZnO
microspheres competitive with existing terahertz-emitting materials. The
mechanical resonance and radiation stem from the coherent photo-induced
vibration of the hexagonal ZnO nanoplates that make up the microsphere shells.
The ZnO microspheres are formed by means of a nonclassical, self-organized
crystallization process, and represent a straightforward route to terahertz
radiation at the nanoscale.

以前我小组里一个中科院博士就是做太赫兹的 他说太赫兹的探测能力很强 但是要解决 发射和衰减问题
现在发射问题看来能解决了
就是不知道对隐形飞机探测能力如何 特别是对四代机



南京大学国家微结构实验室吴兴龙小组在2011年1月16日的《Nature Nanotechnology》
上的成果在微结构的太赫兹发射的道路上迈出了极其关键的一步。
以下是工作的摘要：
The discovery of efficient sources of terahertz radiation has been exploited
in imaging applications1, and developing a nanoscale terahertz source could
lead to additional applications. High-frequency mechanical vibrations of
charged nanostructures can lead to radiative emission, and vibrations at
frequencies of hundreds of kilohertz have been observed from a ZnO nanobelt
under the influence of an alternating electric field. Here, we observe
mechanical resonance and radiative emission at ~0.36 THz from core–shell ZnO
mesocrystal microspheres excited by a continuous green-wavelength laser. We
find that ~0.016% of the incident power is converted into terahertz radiation,
which corresponds to a quantum efficiency of ~33%, making the ZnO
microspheres competitive with existing terahertz-emitting materials. The
mechanical resonance and radiation stem from the coherent photo-induced
vibration of the hexagonal ZnO nanoplates that make up the microsphere shells.
The ZnO microspheres are formed by means of a nonclassical, self-organized
crystallization process, and represent a straightforward route to terahertz
radiation at the nanoscale.