Next Article in Journal
Near-IR Plasmons in Micro and Nanoparticles with a Semiconductor Core
Next Article in Special Issue
Quantum Theory of Multisubband Plasmon–Phonon Coupling
Previous Article in Journal
Nonlinear Optical Study in a Set of Dibenzylideneacetone Derivatives with Potential for Optical Frequency Conversion
Previous Article in Special Issue
Short Barriers for Lowering Current-Density in Terahertz Quantum Cascade Lasers
Open AccessArticle

RF Injection of THz QCL Combs at 80 K Emitting over 700 GHz Spectral Bandwidth

Institute for Quantum Electronics, Department of Physics, ETH Zürich, 8093 Zürich, Switzerland
Author to whom correspondence should be addressed.
Photonics 2020, 7(1), 9;
Received: 3 December 2019 / Revised: 6 January 2020 / Accepted: 14 January 2020 / Published: 16 January 2020
We report about RF injection locking of an homogeneous THz quantum cascade laser operating at 3 THz central frequency. The extremely diagonal nature of the optical transition, combined with low-loss copper-based double-metal waveguides, allow CW operation up to 105 K and CW power in excess of 5.6 mW measured at 80 K. Terahertz emission spanning up to 600 GHz, together with a narrow beatnote, indicate comb operation at 80 K, and strong RF injection clearly modifies the laser spectrum up to 700 GHz spectral bandwidth making these devices ideal candidates for an on-chip dual comb spectrometer. View Full-Text
Keywords: THz QCL; frequency comb; RF injection; broadband THz QCL; frequency comb; RF injection; broadband
Show Figures

Figure 1

MDPI and ACS Style

Forrer, A.; Bosco, L.; Beck, M.; Faist, J.; Scalari, G. RF Injection of THz QCL Combs at 80 K Emitting over 700 GHz Spectral Bandwidth. Photonics 2020, 7, 9.

Show more citation formats Show less citations formats
Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Article Access Map by Country/Region

Back to TopTop