公开(公告)号：US20090066948A1

公开(公告)日：2009-03-12

申请号：US11851476

申请日：2007-09-07

Applicant: Nicholas Karpowicz ,  Xi-Cheng Zhang ,  Keith H. Johnson ,  Matthew Price-Gallagher

Inventor： Nicholas Karpowicz ,  Xi-Cheng Zhang ,  Keith H. Johnson ,  Matthew Price-Gallagher

IPC: G01J3/28

CPC classification number: G01J3/42 ,  G01N21/3563 ,  G01N21/3586

Abstract: Compact terahertz spectrometer. The spectrometer includes an optical beam both for generating terahertz radiation for interaction with the sample and for use in a detector. A DC heterodyne detector uses a DC field-induced second harmonic wave at a sensor plasma to serve as a local oscillator. The spectrometer has a bandwidth orders of magnitude larger than conventional THz spectrometers.

Abstract translation: 紧凑型太赫兹光谱仪。 光谱仪包括用于产生与样品相互作用并用于检测器的太赫兹辐射的光束。 DC外差检测器使用传感器等离子体处的DC场诱发的二次谐波作为本地振荡器。 光谱仪的带宽数量级大于传统的THz光谱仪。