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arXiv · 1808.09844

An electrically pumped phonon-polariton laser

Keita Ohtani·Bo Meng·Martin Franckié·Lorenzo Bosco·Camille Ndebeka-Bandou·Mattias Beck·Jérôme Faist
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Abstract

We report a device that provides coherent emission of phonon polaritons, a mixed state between photons and optical phonons in an ionic crystal. An electrically pumped GaInAs/AlInAs quantum cascade structure provides intersubband gain into the polariton mode at = 26.3 \mu m, allowing self-oscillations close to the longitudinal optical phonon energy of AlAs. Because of the large computed phonon fraction of the polariton of 65%, the emission appears directly on a Raman spectrum measurement exhibiting a Stokes and anti-Stokes component with the expected shift of 48 meV.

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Keita Ohtani, Bo Meng, Martin Franckié, Lorenzo Bosco, Camille Ndebeka-Bandou, Mattias Beck, Jérôme Faist. 2018-08-29. An electrically pumped phonon-polariton laser. https://arxiv.org/abs/1808.09844

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