Frequency-comb-referenced molecular spectroscopy in the mid-infrared region.
نویسندگان
چکیده
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 ν3 band of CH4 are demonstrated.
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عنوان ژورنال:
- Optics letters
دوره 36 21 شماره
صفحات -
تاریخ انتشار 2011