Diode laser spectroscopy using a calibration free phasor decomposition approach to RAM nulling

Keith C. Ruxton; Arup Lal Chakraborty; A.J. McGettrick; K. Duffin; W. Johnstone; G. Stewart

Diode laser spectroscopy using a calibration free phasor decomposition approach to RAM nulling

Keith C. Ruxton, Arup Lal Chakraborty, A.J. McGettrick, K. Duffin, W. Johnstone, G. Stewart

Electronic And Electrical Engineering

Research output: Contribution to conference › Paper › peer-review

Abstract

Tunable diode laser spectroscopy (TDLS) detection schemes have been widely
investigated [1,2] in the near-IR due to the presence of overtone absorption lines in the species of interest and the availability of lasers which operate in the region. However, overtone lines are much weaker than their fundamental absorption line counterparts which, for many species, lie in the Mid-IR. Traditionally the 3-5μm wavelength region has been addressed by lead-salt lasers, but this technology does not lend itself easily to the implementation of TDLS modulation schemes. This paper presents an investigation of TDLS measurements using a system based on difference frequency generation (DFG), in periodically poled lithium niobate (PPLN), which has been used to address fundamental absorption lines of methane (CH4) in the 3.4μm region.

Original language	English
Pages	70
Number of pages	1
Publication status	Published - 2009
Event	7th International Conference on Tunable Diode Laser Spectroscopy - Zermatt, Switzerland Duration: 13 Jul 2009 → 17 Jul 2009

Conference

Conference	7th International Conference on Tunable Diode Laser Spectroscopy
City	Zermatt, Switzerland
Period	13/07/09 → 17/07/09

Keywords

laser spectroscopy
calibration
phasor decomposition method

Cite this

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title = "Diode laser spectroscopy using a calibration free phasor decomposition approach to RAM nulling",

abstract = "Tunable diode laser spectroscopy (TDLS) detection schemes have been widelyinvestigated [1,2] in the near-IR due to the presence of overtone absorption lines in the species of interest and the availability of lasers which operate in the region. However, overtone lines are much weaker than their fundamental absorption line counterparts which, for many species, lie in the Mid-IR. Traditionally the 3-5μm wavelength region has been addressed by lead-salt lasers, but this technology does not lend itself easily to the implementation of TDLS modulation schemes. This paper presents an investigation of TDLS measurements using a system based on difference frequency generation (DFG), in periodically poled lithium niobate (PPLN), which has been used to address fundamental absorption lines of methane (CH4) in the 3.4μm region.",

keywords = "laser spectroscopy , calibration, phasor decomposition method ",

author = "Ruxton, {Keith C.} and Chakraborty, {Arup Lal} and A.J. McGettrick and K. Duffin and W. Johnstone and G. Stewart",

year = "2009",

language = "English",

pages = "70",

note = "7th International Conference on Tunable Diode Laser Spectroscopy ; Conference date: 13-07-2009 Through 17-07-2009",

}

TY - CONF

T1 - Diode laser spectroscopy using a calibration free phasor decomposition approach to RAM nulling

AU - Ruxton, Keith C.

AU - Chakraborty, Arup Lal

AU - McGettrick, A.J.

AU - Duffin, K.

AU - Johnstone, W.

AU - Stewart, G.

PY - 2009

Y1 - 2009

N2 - Tunable diode laser spectroscopy (TDLS) detection schemes have been widelyinvestigated [1,2] in the near-IR due to the presence of overtone absorption lines in the species of interest and the availability of lasers which operate in the region. However, overtone lines are much weaker than their fundamental absorption line counterparts which, for many species, lie in the Mid-IR. Traditionally the 3-5μm wavelength region has been addressed by lead-salt lasers, but this technology does not lend itself easily to the implementation of TDLS modulation schemes. This paper presents an investigation of TDLS measurements using a system based on difference frequency generation (DFG), in periodically poled lithium niobate (PPLN), which has been used to address fundamental absorption lines of methane (CH4) in the 3.4μm region.

AB - Tunable diode laser spectroscopy (TDLS) detection schemes have been widelyinvestigated [1,2] in the near-IR due to the presence of overtone absorption lines in the species of interest and the availability of lasers which operate in the region. However, overtone lines are much weaker than their fundamental absorption line counterparts which, for many species, lie in the Mid-IR. Traditionally the 3-5μm wavelength region has been addressed by lead-salt lasers, but this technology does not lend itself easily to the implementation of TDLS modulation schemes. This paper presents an investigation of TDLS measurements using a system based on difference frequency generation (DFG), in periodically poled lithium niobate (PPLN), which has been used to address fundamental absorption lines of methane (CH4) in the 3.4μm region.

KW - laser spectroscopy

KW - calibration

KW - phasor decomposition method

UR - http://tdls.conncoll.edu/2009/index.html

UR - http://tdls.conncoll.edu/2009/ABSTRACTBOOK2009.pdf

M3 - Paper

SP - 70

T2 - 7th International Conference on Tunable Diode Laser Spectroscopy

Y2 - 13 July 2009 through 17 July 2009

ER -

Diode laser spectroscopy using a calibration free phasor decomposition approach to RAM nulling

Abstract

Conference

Keywords

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