High Precision Mid-Ir Spectroscopy of ^{12C^{16}O_{2}} Near 4.3 μ m

Details High Precision Mid-Ir Spectroscopy of ^{12C^{16}O_{2}} Near 4.3 μ m High Precision Mid-Ir Spectroscopy of ^{12C^{16}O_{2}} Near 4.3 μ m

Jun 2009

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009mss..confetg11t&link_type=abstract

"International Symposium On Molecular Spectroscopy, 64th Meeting, Held 22-26 June, 2009 at Ohio State University. http://molspec

Physics

Infrared/Raman

Scientific paper

We have observed the sub-Doppler saturation spectrum of the ^{12C^{16}O_{2}} near 4.3 μ m using a mW-level DFG (Difference Frequency Generation) source. The DFG radiation is generated by a 1-W Ti:sapphire laser and a Nd:YAG laser amplified by 10-W fiber amplifier in a 50-mm long PPLN (Periodically Poled Lithium Niobate) crystal. We are able to generate 2 mW DFG power at 4.3 μ m. The Nd:YAG laser is frequency-doubled, and frequency stabilized on one ^{127I_{2}} hyperfine transition. The Ti:sapphire laser is locked onto the center of CO_{2} transition and its frequency is measured by an OFC (Optical Frequency Comb). In this talk, we will report our recent measurements on the high J 0001 → 0000 fundamental band transitions and the hot band 0111 → 0110 transitions. To increase the signal-to-noise ratio of the observed spectra, the CO_{2} absorption cell in heated to a temperature > 500^°C.

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