Long Wavelength (λ > 17 µm) Distributed Feedback Quantum Cascade Lasers Operating in a Continuous Wave at Room Temperature

Abstract : The extension of the available spectral range covered by quantum cascade lasers (QCL) would allow one to address new molecular spectroscopy applications, in particular in the long wavelength domain of the mid-infrared. We report in this paper the realization of distributed feedback (DFB) QCLs, made of InAs and AlSb, that demonstrated a continuous wave (CW) and a single mode emission at a wavelength of 17.7 µm, with output powers in the mW range. This is the longest wavelength for DFB QCLs, and for any QCLs or semiconductor lasers in general, operating in a CW at room temperature.
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Soumis le : jeudi 21 novembre 2019 - 18:31:34
Dernière modification le : mercredi 27 novembre 2019 - 01:40:32

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Hoang Nguyen Van, Zeineb Loghmari, Hadrien Philip, Michaël Bahriz, Alexei Baranov, et al.. Long Wavelength (λ > 17 µm) Distributed Feedback Quantum Cascade Lasers Operating in a Continuous Wave at Room Temperature. Photonics, MDPI, 2019, 6 (1), pp.31. ⟨10.3390/photonics6010031⟩. ⟨hal-02375047⟩

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