@inproceedings{317a55921acb42eca43157229abb7382,
title = "Widely-tuned room-temperature terahertz quantum cascade laser sources",
abstract = "Room temperature THz quantum cascade laser sources with a broad spectral coverage based on intracavity differencefrequency generation are demonstrated. Two mid-infrared active cores in the longer mid-IR wavelength range (9-11m) based on the single-phonon resonance scheme are designed with a second-order difference frequency nonlinearity specially optimized for the high operating fields that correspond to the highest mid-infrared output powers. A {\v C}erenkov phase-matching scheme along with integrated dual-period distributed feedback gratings are used for efficient THz extraction and spectral purification. Single mode emissions from 1.0 to 4.6 THz with a side-mode suppression ratio and output power up to 40 dB and 32 μW are obtained, respectively.",
keywords = "difference frequency generation, quantum cascade lasers, terahertz",
author = "Lu, {Quan Yong} and Neelanjan Bandyopadhyay and Steven Slivken and Yanbo Bai and Manijeh Razeghi",
year = "2013",
month = apr,
day = "9",
doi = "10.1117/12.2019101",
language = "English (US)",
isbn = "9780819494009",
series = "Proceedings of SPIE - The International Society for Optical Engineering",
booktitle = "Quantum Sensing and Nanophotonic Devices X",
note = "Quantum Sensing and Nanophotonic Devices X ; Conference date: 03-02-2013 Through 07-02-2013",
}