Characterization and frequency measurement of a new far infrared laser line from CHin2Fin2

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Abstract

We present the discovery and frequency measurement of a new FIR laser line from CH2F2 optically pumped by a waveguide CO2 laser. This new line has the same CO2 laser pump line (9R32), offset (+5 MHz) and relative polarization ⊥ of the strongest FIR laser line of CH2F2, namely the 184.3μm. The frequency is only 19,454 MHz apart from that of this line. We got a frequency measurement of 1,646,196.6 (10) MHz, which corresponds to a wavelength of 182.112 μm.

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