PRECISION FREQUENCY MEASUREMENT OF N2O TRANSITIONS NEAR 4.5 μm AND ABOVE 150 μm

Drouin, Brian

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https://hdl.handle.net/2142/50992 Copy

Description

Title

PRECISION FREQUENCY MEASUREMENT OF N2O TRANSITIONS NEAR 4.5 μm AND ABOVE 150 μm

Author(s)

Drouin, Brian

Contributor(s)

• Daly, Adam M.
• Shy, Jow-Tsong
• Chen, Hsuan Chen
• Chen, Shih-En
• Chang, Chun-Hung
• Ting, Wei-Jo

Issue Date

2014-06-17

Keyword(s)

Instrument/Technique Demonstration

Abstract

Frequency measurements are given for the 10$^0$0-00$^0$0 band of N$_2$O near 4.5 $\mu$m and for pure rotational transitions beyond 151.5 $\mu$m. The infrared measurements utilize a periodically-poled lithium niobate (PPLN) based difference frequency generation (DFG) source locked to the saturated absorption center of an N$_2$O absorption line. The DFG frequency is calibrated by an optical frequency comb and an iodine hyperfine transition. We report 44 transitions ranging from $J$ = 1 - 100 for both the $P-$ and $R-$ branches and the accuracy is better than 10 kHz for most transitions. In addition, 175 pure rotational transitions have been measured including 33 measurement with sub-Doppler precision ($<$ 3 kHz), and 142 Doppler limited measurements. These are combined with other precision rotational and vibrational measurements to provide improved quantum mechanical parameters as well as frequency calibration tables for the N$_2$O bands near 4.5 $\mu$m.

Publisher

International Symposium on Molecular Spectroscopy

Type of Resource

text

Language

English

Permalink

http://hdl.handle.net/2142/50992

DOI

https://doi.org/10.15278/isms.2014.TB06

Copyright and License Information

Copyright 2014 by the authors. Licensed under a Creative Commons Attribution 4.0 International License. http://creativecommons.org/licenses/by/4.0/

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