Abstract
A simple method for absolute-frequency measurements of
molecular transitions in the mid-IR region is reported.
The method is based on a cw singly resonant optical
parametric oscillator (SRO), which is tunable from 3.2 to
3.45 µm . The mid-IR frequency of the SRO is referenced
to an optical frequency comb through its pump and signal
beams. Sub-Doppler spectroscopy and absolute-frequency
measurement of the P(7) transition of the {\nu}3 band of
CH4 are demonstrated.
| Original language | English |
|---|---|
| Pages (from-to) | 4122-4124 |
| Journal | Optics Letters |
| Volume | 36 |
| Issue number | 21 |
| DOIs | |
| Publication status | Published - 2011 |
| MoE publication type | A1 Journal article-refereed |
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