公开(公告)号：US20160131600A1

公开(公告)日：2016-05-12

申请号：US14898077

申请日：2014-06-12

Applicant: UNIVERSITY OF VIRGINIA PATENT FOUNDATION

Inventor： Brooks Hart PATE ,  Amanda STEBER ,  Brent HARRIS ,  Kevin K. LEHMANN

IPC: G01N22/00 ,  G01J3/453

CPC classification number: G01N22/00 ,  G01J3/453 ,  G01N21/3586

Abstract: Examples herein include apparatus and techniques that can be used to perform rotational spectroscopy on gas-phase samples. Such techniques can include using a spectrometer providing frequency synthesis and pulse modulation to provide excitation (e.g., pump or probe pulses) of a gas-phase sample at mm-wave frequencies. Synthesis of such mm-wave frequencies can include use of a frequency multiplier, such as an active multiplier chain (AMC). A free induction decay (FID) elicited by the excitation or other time-domain information can be obtained from the sample, such as down-converted and digitized. A frequency domain representation of the digitized information, such as a Fourier transformed representation, can be used to provide a rotational spectrum.

Abstract translation: 本文的实例包括可用于对气相样品进行旋转光谱的装置和技术。 这样的技术可以包括使用提供频率合成和脉冲调制的光谱仪以毫米波频率提供气相样品的激发（例如泵或探针脉冲）。 这种mm波频率的合成可以包括使用诸如有源乘法器链（AMC）的倍频器。 可以从样品获得由激发或其他时域信息引起的自由感应衰减（FID），如下变频和数字化。 诸如傅里叶变换表示之类的数字化信息的频域表示可用于提供旋转频谱。