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Ultrasensitive near-infrared cavity ring-down spectrometer for precise line profile measurement
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10.1063/1.3385675
/content/aip/journal/rsi/81/4/10.1063/1.3385675
http://aip.metastore.ingenta.com/content/aip/journal/rsi/81/4/10.1063/1.3385675
View: Figures

Figures

Image of FIG. 1.
FIG. 1.

Schematic diagram of the experimental setup. The abbreviations are as following: beam splitter (BS); acousto-optical modulator (AOM); high-reflectivity mirror (HR); pinhole (PH); photodetector (PD); lens (L1,L2); fiber coupler (c); Fabry-Perot (FP) interferometer; and electro-optic modulator (EOM).

Image of FIG. 2.
FIG. 2.

Ring-down curve (a) and the fitting residue (b) of one ring-down event. The fitting result (ring-down time) and standard deviation of the fitting are presented in (c). The criterion of the “removal” procedure (see text) is shown as dashed lines on (c).

Image of FIG. 3.
FIG. 3.

Mirror reflectivity and the ring-down time over the 745–830 nm range.

Image of FIG. 4.
FIG. 4.

Allan variance of the decay rate and the MDAL.

Image of FIG. 5.
FIG. 5.

FPI fringes (lower panel) and -meter outputs (upper panel) in a scan. In the lower panel, the labels correspond to different orders of the sidebands produced with an EOM.

Image of FIG. 6.
FIG. 6.

The absorption centered at recorded with different laser scanning intervals, 0.0006 and , respectively. The experimental data and the calculated line profiles are given in the upper panel. The residues are given in the lower panel.

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/content/aip/journal/rsi/81/4/10.1063/1.3385675
2010-04-15
2014-04-20
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Ultrasensitive near-infrared cavity ring-down spectrometer for precise line profile measurement
http://aip.metastore.ingenta.com/content/aip/journal/rsi/81/4/10.1063/1.3385675
10.1063/1.3385675
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