公开(公告)号：EP2609407A4

公开(公告)日：2017-12-13

申请号：EP11819225

申请日：2011-08-19

Applicant: HONEYWELL ASCA INC

Inventor： MOUSAVI PAYAM ,  DODGE STEVEN ,  HARAN FRANK MARTIN ,  SAVARD STÉPHANE ,  JEZ DAVID ,  HEATH STUART JAMES

IPC: G01N21/3586 ,  D21F7/00 ,  D21F7/06 ,  D21G9/00 ,  G01B11/06 ,  G01J3/28 ,  G01J3/42 ,  G01N21/3559 ,  G01N21/86

CPC classification number: G01J3/42 ,  D21F7/06 ,  D21G9/0009 ,  G01B11/0625 ,  G01J3/28 ,  G01J3/2889 ,  G01N21/3559 ,  G01N21/3586 ,  G01N2021/8663

Abstract: An apparatus for incorporation into time-domain spectroscopy systems that creates a continuous reference whereby a sample pulses' phase and amplitude can be tracked and corrected employs a beam splitter to generate sample and reference pulses. A detector is positioned for receiving the reference radiation pulses that do not interact with the sample. The same detector is also positioned for receiving the sample radiation pulses that emerge from the sample. The apparatus can be readily implemented by being configured between the emitter and detector of a terahertz time-domain spectrometer. The reference pulse is used to trace the changes in time and amplitude of the sample pulse. Since any changes in the reference pulse will most likely manifest in the sample pulse, the reference pulse is monitored and used to correct the sample pulse and thereby reduce the effects of jitter.