CONTINUOUS REFERENCING FOR INCREASING MEASUREMENT PRECISION IN TIME-DOMAIN SPECTROSCOPY

Title:

CONTINUOUS REFERENCING FOR INCREASING MEASUREMENT PRECISION IN TIME-DOMAIN SPECTROSCOPY

Document Type and Number:

WIPO Patent Application WO/2012/024771

Kind Code:

A3

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.

Inventors:

MOUSAVI PAYAM (US)
DODGE STEVEN (US)
HARAN FRANK MARTIN (US)
SAVARD STEPHANE (US)
JEZ DAVID (US)
HEATH STUART JAMES (US)

Application Number:

PCT/CA2011/000938

Publication Date:

November 29, 2012

Filing Date:

August 19, 2011

Export Citation:

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Assignee:

HONEYWELL ASCA INC (CA)
MOUSAVI PAYAM (US)
DODGE STEVEN (US)
HARAN FRANK MARTIN (US)
SAVARD STEPHANE (US)
JEZ DAVID (US)
HEATH STUART JAMES (US)

International Classes:

G01J3/42; G01J3/28

Foreign References:

US20060063188A1	2006-03-23
US6865014B2	2005-03-08
US20050082479A1	2005-04-21
US5491552A	1996-02-13
US20080239317A1	2008-10-02

Other References: