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A quantum cascade laser-pumped molecular laser tunable over 1 THz

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arxiv 2105.13326 v2 pith:3Z325WLI submitted 2021-05-27 physics.optics physics.app-ph

classification physics.opticsphysics.app-ph
keywords cascadelaserquantumlaser-pumpedlasingmolecularqpmltransition
verification ladder T0 review T1 audit T2 compute T3 formal
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abstract

By introducing methyl fluoride (CH$_3$F) as a new gain medium for a quantum cascade laser-pumped molecular laser (QPML), we demonstrate continuous-wave lasing from more than 120 discrete transitions spanning the frequency range 0.25 to 1.3 THz. The unprecedented degree of spectral tuning achieved with CH$_3$F also confirms the universality of the QPML concept: for all polar gas molecules, lasing can be induced on any dipole-allowed rotational transition by sufficient pumping of a related roto-vibrational transition using a continuously tunable quantum cascade laser.

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