@inproceedings{bccdbf7117d24089bd586ba7b593060c,
title = "Review of high power frequency comb sources based on InP: From MIR to THz at CQD",
abstract = " We present the recent development of high performance compact frequency comb sources based on mid-infrared quantum cascade lasers. Significant performance improvements of our frequency combs with respect to the continuous wave power output, spectral bandwidth, and beatnote linewidth are achieved by systematic optimization of the device's active region, group velocity dispersion, and waveguide design. To date, we have demonstrated the most efficient, high power frequency comb operation from a free-running room temperature continuous wave (RT CW) dispersion engineered QCL atλ ∼5-9μm. In terms of bandwidth, the comb covered a broad spectral range of 120 cm -1 with a radio-frequency intermode beatnote spectral linewidth of 40 Hz and a total power output of 880 mW at 8 μm and 1 W at λ∼5.0μm. The developing characteristics show the potential for fast detection of various gas molecules. Furthermore, THz comb sources based on difference frequency generation in a mid-IR QCL combs could be potentially developed. ",
keywords = "four-wave mixing, frequency comb, group velocity dispersion, quantum cascade lasers",
author = "Manijeh Razeghi and Quanyong Lu and Donghai Wu and Steven Slivken",
note = "Funding Information: This work is partially supported by the National Science Foundation (grants ECCS-1505409 and ECCS-1607838). The published material represents the position of the author(s) and not necessarily that of the National Science Foundation. The authors would also like to acknowledge the encouragement and support of all the involved program managers. Publisher Copyright: {\textcopyright} 2018 SPIE.; Terahertz Emitters, Receivers, and Applications IX 2018 ; Conference date: 19-08-2018 Through 20-08-2018",
year = "2018",
doi = "10.1117/12.2326358",
language = "English (US)",
series = "Proceedings of SPIE - The International Society for Optical Engineering",
publisher = "SPIE",
editor = "Baranov, {Alexei N.} and Manijeh Razeghi",
booktitle = "Terahertz Emitters, Receivers, and Applications IX",
}