公开(公告)号：US07326930B2

公开(公告)日：2008-02-05

申请号：US11033822

申请日：2005-01-13

Applicant: David Alexander Crawely

Inventor： David Alexander Crawely

IPC: G01J5/02

CPC classification number: G01J3/4338 ,  G01J3/0224 ,  G01N21/3581 ,  G01N21/453 ,  G01N2021/1772 ,  G01N2021/1785 ,  G01N2021/3595 ,  G01N2201/064

Abstract: This invention relates to apparatus and methods for sensing terahertz radiation, in particular over an area, and to terahertz radiation imaging systems.A terahertz radiation sensor, the sensor comprising an optical beam input to receive an optical probe beam, a detector to modulate said probe beam responsive to terahertz radiation, and a photosensitive detector to provide an output responsive to said probe beam modulation. The sensor being configured to provide a first optical path between said optical beam input and said electro-optic detector and to provide a second optical path between said electro-optic detector and said photosensitive detector, and wherein said sensor further comprises a polarizer, said polarizer being located in both said first and said second optical paths. We further describe imaging systems for use with such a probe.

Abstract translation: 本发明涉及用于感测太赫兹辐射的装置和方法，特别是涉及一个区域以及太赫兹辐射成像系统。 一种太赫兹辐射传感器，该传感器包括用于接收光学探测光束的光束输入，响应于太赫兹辐射来调制所述探测光束的检测器，以及响应于所述探测光束调制的光敏检测器以提供输出。 所述传感器被配置为在所述光束输入和所述电光检测器之间提供第一光路，并且在所述电光检测器和所述光敏检测器之间提供第二光路，并且其中所述传感器还包括偏振器，所述偏振器 位于所述第一和第二光路两者中。 我们进一步描述与这种探针一起使用的成像系统。