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Communication Dans Un Congrès Année : 2017

Progress in continuous wave THz molecular laser optically pumped by a quantum cascade laser

Résumé

We have demonstrated a new approach to realize a continuous wave room temperature THz laser source: a low-pressure molecular gas is optically pumped by a solid-state mid-infrared source. A tunable quantum cascade laser allows to have access to transitions that are not accessible to CO 2 lasers. Here we present our last results concerning NH3: pure inversion transitions allows emission around 1 THz. At 1.073 THz a new cavity design is used and a power of 0.67 mW is obtained with a high differential efficiency of 6.4 mW/W. This improved output power will permit imaging and local oscillator applications.
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Dates et versions

hal-03692085 , version 1 (09-06-2022)

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Antoine Pagies, Guillaume Ducournau, Jean-Francois Lampin. Progress in continuous wave THz molecular laser optically pumped by a quantum cascade laser. 2017 42nd International Conference on Infrared, Millimeter, and Terahertz Waves (IRMMW-THz), Aug 2017, Cancun, Mexico. pp.1-2, ⟨10.1109/IRMMW-THz.2017.8067232⟩. ⟨hal-03692085⟩
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