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Infrared and far-infrared spectroscopy of CH3OH: TeraHertz laser lines and assignments |
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| Authors: | LFL Costa FC Cruz D Pereira |
| Institution: | a Instituto de Física “Gleb Wataghin”, Universidade Estadual de Campinas (UNICAMP), 13083-970 Campinas, São Paulo, Brazil b Depto de Física e Química, Av. Brasil 56, UNESP—Campus de Ilha Solteira, 15385-000 Ilha Solteira, São Paulo, Brazil c Depto de Ciências, Universidade Estadual de Maringá, 87360-000 Goioerê, Paraná, Brazil |
| Abstract: | We use a 13CO2 laser as optical pumping source to search for new THz laser lines generated from 13CH3OH. Nineteen new THz laser lines (also identified as far-infrared, FIR) ranging from 42.3 μm (7.1 THz) to 717.7 μm (0.42 THz) are reported. They are characterized in wavelength, offset, relative polarization, relative intensity, and optimum working pressure. We have assigned eight laser lines to specific rotational energy levels in the excited state associated with the C-O stretching mode. |
| Keywords: | Assignments 13CH3OH Far-infrared lasers TeraHertz lasers |
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