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Terahertz emitters at Center for Quantum Devices: recent advances and future trends
Author(s): Manijeh Razeghi
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Paper Abstract

This paper reviews the recent advances and future trends of terahertz (THz) emitters at CQD/NU, highlights the high-performance THz sources based on intracavity nonlinear frequency generation in mid-infrared quantum cascade lasers. Significant performance improvements of our THz sources in the power, wall plug efficiency are achieved by systematic optimizing the device's active region, waveguide, and chip bonding strategy. High THz power up to 1.9 mW and 0.014 mW for pulsed mode and continuous wave operations at room temperature are demonstrated, respectively. Even higher power and efficiency are envisioned based on enhancements in outcoupling efficiency and mid-IR performance. Our compact THz device with high power and wide tuning range is highly suitable for the imaging, sensing, spectroscopy, medical diagnosis, and many other applications.

Paper Details

Date Published: 23 August 2017
PDF: 14 pages
Proc. SPIE 10383, Terahertz Emitters, Receivers, and Applications VIII, 1038305 (23 August 2017); doi: 10.1117/12.2277609
Show Author Affiliations
Manijeh Razeghi, Northwestern Univ. (United States)


Published in SPIE Proceedings Vol. 10383:
Terahertz Emitters, Receivers, and Applications VIII
Manijeh Razeghi; Alexei N. Baranov; Dimitris Pavlidis; John M. Zavada, Editor(s)

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