An efficient and compact difference-frequency-generation spectrometer and its application to 12CH3D/12CH4 isotope ratio measurements

Kiyoshi Tsuji; Hiroaki Teshima; Hiroyuki Sasada; Naohiro Yoshida

doi:10.3390/s100706612

An efficient and compact difference-frequency-generation spectrometer and its application to ¹²CH₃D/¹²CH₄ isotope ratio measurements

Kiyoshi Tsuji
, Hiroaki Teshima
, Hiroyuki Sasada
, Naohiro Yoshida

Department of Physics

Research output: Contribution to journal › Article › peer-review

3 Citations (Scopus)

Abstract

We have developed an efficient and compact 3.4 μm difference-frequency-generation spectrometer using a 1.55 μm distributed feedback (DFB) laser diode, a 1.06 μm DFB laser diode, and a ridge-waveguide periodically poled lithium niobate. It is continuously tunable in the 30 cm-1 span and is applied to ¹²CH₃D¹²CH₄ isotope ratio measurements. The suitable pair of ¹²CH₃Dv4 pP(7,6) and ¹²CH₄ ν2+ν₄ R(6) F₁(1) lines enabled us to determine their isotope ratio with a precision repeatability of 0.8‰ using a sample and a working standard of pure methane with an effective signal averaging time of 100 ms.

Original language	English
Pages (from-to)	6612-6622
Number of pages	11
Journal	Sensors
Volume	10
Issue number	7
DOIs	https://doi.org/10.3390/s100706612
Publication status	Published - 2010 Jul

Keywords

Difference frequency generation
Isotope ratio
Laser spectroscopy
Methane
Waveguide PPLN

ASJC Scopus subject areas

Analytical Chemistry
Information Systems
Biochemistry
Atomic and Molecular Physics, and Optics
Instrumentation
Electrical and Electronic Engineering

Access to Document

10.3390/s100706612

Cite this

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title = "An efficient and compact difference-frequency-generation spectrometer and its application to 12CH3D/12CH4 isotope ratio measurements",

abstract = "We have developed an efficient and compact 3.4 μm difference-frequency-generation spectrometer using a 1.55 μm distributed feedback (DFB) laser diode, a 1.06 μm DFB laser diode, and a ridge-waveguide periodically poled lithium niobate. It is continuously tunable in the 30 cm-1 span and is applied to 12CH3D12CH4 isotope ratio measurements. The suitable pair of 12CH3Dv4 pP(7,6) and 12CH4 ν2+ν4 R(6) F1(1) lines enabled us to determine their isotope ratio with a precision repeatability of 0.8‰ using a sample and a working standard of pure methane with an effective signal averaging time of 100 ms.",

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AU - Teshima, Hiroaki

AU - Sasada, Hiroyuki

AU - Yoshida, Naohiro

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AB - We have developed an efficient and compact 3.4 μm difference-frequency-generation spectrometer using a 1.55 μm distributed feedback (DFB) laser diode, a 1.06 μm DFB laser diode, and a ridge-waveguide periodically poled lithium niobate. It is continuously tunable in the 30 cm-1 span and is applied to 12CH3D12CH4 isotope ratio measurements. The suitable pair of 12CH3Dv4 pP(7,6) and 12CH4 ν2+ν4 R(6) F1(1) lines enabled us to determine their isotope ratio with a precision repeatability of 0.8‰ using a sample and a working standard of pure methane with an effective signal averaging time of 100 ms.

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KW - Isotope ratio

KW - Laser spectroscopy

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KW - Waveguide PPLN

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