DE3690149T1 - - Google Patents

Info

Publication number
DE3690149T1
DE3690149T1 DE19863690149 DE3690149T DE3690149T1 DE 3690149 T1 DE3690149 T1 DE 3690149T1 DE 19863690149 DE19863690149 DE 19863690149 DE 3690149 T DE3690149 T DE 3690149T DE 3690149 T1 DE3690149 T1 DE 3690149T1
Authority
DE
Germany
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
DE19863690149
Other languages
German (de)
Other versions
DE3690149C2 (de
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed filed Critical
Publication of DE3690149T1 publication Critical patent/DE3690149T1/de
Pending legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
    • G01J3/00—Spectrometry; Spectrophotometry; Monochromators; Measuring colours
    • G01J3/28—Investigating the spectrum
    • G01J3/42—Absorption spectrometry; Double beam spectrometry; Flicker spectrometry; Reflection spectrometry
    • G01J3/433—Modulation spectrometry; Derivative spectrometry
    • G01J3/4338—Frequency modulated spectrometry

Landscapes

  • Physics & Mathematics (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • General Physics & Mathematics (AREA)
  • Investigating Or Analysing Materials By Optical Means (AREA)
  • Spectrometry And Color Measurement (AREA)
DE19863690149 1985-03-29 1986-03-03 Pending DE3690149T1 (enEXAMPLES)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US06/717,356 US4594511A (en) 1985-03-29 1985-03-29 Method and apparatus for double modulation spectroscopy

Publications (1)

Publication Number Publication Date
DE3690149T1 true DE3690149T1 (enEXAMPLES) 1987-04-02

Family

ID=24881694

Family Applications (2)

Application Number Title Priority Date Filing Date
DE19863690149 Pending DE3690149T1 (enEXAMPLES) 1985-03-29 1986-03-03
DE3690149A Expired - Fee Related DE3690149C2 (de) 1985-03-29 1986-03-03 Einrichtung zum Nachweis einer spektralen Eigenheit einer Probe

Family Applications After (1)

Application Number Title Priority Date Filing Date
DE3690149A Expired - Fee Related DE3690149C2 (de) 1985-03-29 1986-03-03 Einrichtung zum Nachweis einer spektralen Eigenheit einer Probe

Country Status (5)

Country Link
US (1) US4594511A (enEXAMPLES)
JP (1) JPH0672804B2 (enEXAMPLES)
CA (1) CA1273819A (enEXAMPLES)
DE (2) DE3690149T1 (enEXAMPLES)
WO (1) WO1986005878A1 (enEXAMPLES)

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FR2593917B1 (fr) * 1986-02-06 1988-06-03 Univ Reims Champagne Ardenne Procede et dispositif d'analyse et de mesure des parametres physiques d'un materiau en couches par radiometrie thermique
US4765736A (en) * 1986-07-24 1988-08-23 Electric Power Research Institute Frequency modulation spectroscopy using dual frequency modulation and detection
US4840485A (en) * 1986-12-17 1989-06-20 I.S.S. (U.S.A.) Inc. Frequency domain cross-correlation fluorometry with phase-locked loop frequency synthesizers
US4899053A (en) * 1987-10-21 1990-02-06 Criticare Systems, Inc. Solid state non-dispersive IR analyzer using electrical current-modulated microsources
US4975635A (en) * 1987-11-05 1990-12-04 Hironori Takahashi Voltage detector using a sampling type high-speed photodetector
US5076699A (en) * 1989-05-01 1991-12-31 Rosemount Analytical Inc. Method and apparatus for remotely and portably measuring a gas of interest
US4982082A (en) * 1989-11-21 1991-01-01 Hughes Aircraft Company Frequency detector for discriminating multi-longitudinal mode laser operation
US5969825A (en) * 1991-08-06 1999-10-19 Southwest Sciences Incorporated Dual-modulation laser line-locking for wavelength modulation spectroscopy
US6351309B1 (en) 1991-08-06 2002-02-26 Southwest Sciences Incorporated Dual modulation laser line-locking technique for wavelength modulation spectroscopy
US5317156A (en) * 1992-01-29 1994-05-31 Sri International Diagnostic tests using near-infrared laser absorption spectroscopy
DE4300853C2 (de) * 1993-01-15 2003-09-04 Daimler Chrysler Ag Verfahren zur spektroskopischen Bestimmung des Stickstoffoxidgehalts
DE4320038C1 (de) * 1993-06-17 1994-12-15 Fraunhofer Ges Forschung Anordnung zum Bewerten eines Meßsignals nach Betrag und Phase in Bezug auf ein Referenzsignal
JP3474612B2 (ja) * 1993-12-03 2003-12-08 浜松ホトニクス株式会社 光検出装置
EP0689045A1 (en) * 1994-06-23 1995-12-27 Koninklijke Philips Electronics N.V. Multi-frequency modulation spectrometer
US5498467A (en) * 1994-07-26 1996-03-12 W. L. Gore & Associates, Inc. Process for preparing selectively conductive materials by electroless metal deposition and product made therefrom
DE4437575C2 (de) * 1994-10-20 2000-05-25 Max Planck Gesellschaft Spektrometer mit kohärenter und periodisch gepulster Strahlung
US5637872A (en) * 1995-08-24 1997-06-10 Tulip; John Gas detector
US5757013A (en) * 1995-12-06 1998-05-26 American Research Corporation Of Virginia Fluorescence decay measurement by calculation of inner product
US6064488A (en) * 1997-06-06 2000-05-16 Monitor Labs, Inc. Method and apparatus for in situ gas concentration measurement
AU1060099A (en) * 1997-06-10 1999-01-25 American Research Corporation Of Virginia Detection of chemical agent materials using a sorbent polymer and fluores cent probe
US6040914A (en) * 1997-06-10 2000-03-21 New Focus, Inc. Simple, low cost, laser absorption sensor system
US6300638B1 (en) 1998-11-12 2001-10-09 Calspan Srl Corporation Modular probe for total internal reflection fluorescence spectroscopy
US6664533B1 (en) 1999-01-20 2003-12-16 Gas Research Institute Apparatus and method of remote gas trace detection
US6518562B1 (en) 2000-01-20 2003-02-11 Gas Research Institute Apparatus and method of remote gas trace detection
US6831935B2 (en) * 2001-03-29 2004-12-14 The Regents Of The University Of Colorado Multistage synchronization of pulsed radiation sources
EP1475618B1 (en) * 2003-05-09 2008-12-10 Siemens Aktiengesellschaft Wavelength modulation spectroscopy method and system
US7230712B2 (en) * 2003-11-03 2007-06-12 Battelle Memorial Institute Reduction of residual amplitude modulation in frequency-modulated signals
US7102751B2 (en) * 2003-11-11 2006-09-05 Battelle Memorial Institute Laser-based spectroscopic detection techniques
US7332700B2 (en) * 2004-04-26 2008-02-19 Bruce Masato Ishimoto Photomultiplier tube with dynode modulation for photon-counting
JP4547507B2 (ja) * 2006-02-15 2010-09-22 国立大学法人京都大学 イオンビーム検出器
US7535005B2 (en) * 2007-01-31 2009-05-19 Emcore Corporation Pulsed terahertz spectrometer
JP5176535B2 (ja) * 2007-02-02 2013-04-03 富士電機株式会社 レーザ式ガス分析計
US8604433B2 (en) 2008-05-19 2013-12-10 Emcore Corporation Terahertz frequency domain spectrometer with frequency shifting of source laser beam
US7781736B2 (en) * 2008-05-19 2010-08-24 Emcore Corporation Terahertz frequency domain spectrometer with controllable phase shift
US9029775B2 (en) 2008-05-19 2015-05-12 Joseph R. Demers Terahertz frequency domain spectrometer with phase modulation of source laser beam
US9030663B2 (en) 2011-10-31 2015-05-12 Exelis Inc. Remote absorption spectroscopy by coded transmission
US9103715B1 (en) 2013-03-15 2015-08-11 Joseph R. Demers Terahertz spectrometer phase modulator control using second harmonic nulling
US9400214B1 (en) 2013-03-15 2016-07-26 Joseph R. Demers Terahertz frequency domain spectrometer with a single photoconductive element for terahertz signal generation and detection
DE102013218771B3 (de) * 2013-09-19 2014-09-18 Siemens Aktiengesellschaft Verfahren und Gasanalysator zur Messung der Konzentration einer Gaskomponente in einem Messgas
US9086374B1 (en) 2014-04-25 2015-07-21 Joseph R. Demers Terahertz spectrometer with phase modulation and method
US9404853B1 (en) 2014-04-25 2016-08-02 Joseph R. Demers Terahertz spectrometer with phase modulation
US9239264B1 (en) 2014-09-18 2016-01-19 Joseph R. Demers Transceiver method and apparatus having phase modulation and common mode phase drift rejection
EP3201605B1 (en) * 2014-09-30 2019-11-06 Li-Cor, Inc. Laser beam stop elements and spectroscopy systems including the same
US9429473B2 (en) 2014-10-16 2016-08-30 Joseph R. Demers Terahertz spectrometer and method for reducing photomixing interference pattern
JP6413759B2 (ja) * 2014-12-25 2018-10-31 株式会社島津製作所 光学分析装置

Family Cites Families (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4051371A (en) * 1976-04-26 1977-09-27 Massachusetts Institute Of Technology Opto-acoustic spectroscopy employing amplitude and wavelength modulation
US4094608A (en) * 1976-10-14 1978-06-13 Xonics, Inc. Spectrometer of the electro-opto-acoustic type with capacitor-type detection
US4187026A (en) * 1977-09-29 1980-02-05 Phillips Petroleum Company Photoacoustic method and apparatus for measuring intensity of electromagnetic radiation
US4184768A (en) * 1977-11-04 1980-01-22 The Johns Hopkins University Self-calibrating photoacoustic apparatus for measuring light intensity and light absorption
US4176959A (en) * 1978-04-17 1979-12-04 Raytheon Company High gain laser spectrometer
US4241997A (en) * 1978-12-11 1980-12-30 General Motors Corporation Laser spectrometer with frequency calibration
US4498770A (en) * 1979-05-29 1985-02-12 Beta Industries, Inc. Apparatus and method for determining the configuration of a reflective surface
DE3072067D1 (en) * 1979-09-05 1988-02-18 Ici Plc Method of and apparatus for monitoring gaseous pollutants
US4297035A (en) * 1979-09-14 1981-10-27 International Business Machines Corporation Method and device for detecting a specific spectral feature
US4284354A (en) * 1979-10-24 1981-08-18 Bell Telephone Laboratories, Incorporated Sensitive nonlinear optical spectroscopy
DE2948590C2 (de) * 1979-12-03 1985-08-22 Erwin Sick Gmbh Optik-Elektronik, 7808 Waldkirch Vorrichtung zur Absorptionsmessung von Gasgemischen
DE3014646C2 (de) * 1980-04-16 1983-12-15 Erwin Sick Gmbh Optik-Elektronik, 7808 Waldkirch Vorrichtung zur Spektralanalyse
DE3045156C2 (de) * 1980-12-01 1983-12-08 Erwin Sick Gmbh Optik-Elektronik, 7808 Waldkirch Vorrichtung zur Spektralanalyse
JPS57161518A (en) * 1981-03-31 1982-10-05 Anritsu Corp Self modulating spectrometer
US4448494A (en) * 1981-06-17 1984-05-15 Hazeltine Corporation Acousto-optical signal detector
JPS582641U (ja) * 1981-06-29 1983-01-08 株式会社島津製作所 分光光度計
US4469443A (en) * 1982-06-01 1984-09-04 The United States Of America As Represented By The Secretary Of The Navy Atmospheric transmissometer
US4450356A (en) * 1982-06-07 1984-05-22 Sri International Frequency-mixed CO2 laser radar for remote detection of gases in the atmosphere
US4523847A (en) * 1983-07-07 1985-06-18 International Business Machines Corporation Frequency modulation-polarization spectroscopy method and device for detecting spectral features

Also Published As

Publication number Publication date
US4594511A (en) 1986-06-10
JPH0672804B2 (ja) 1994-09-14
JPS62502355A (ja) 1987-09-10
CA1273819A (en) 1990-09-11
DE3690149C2 (de) 1998-05-20
WO1986005878A1 (en) 1986-10-09

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