Ultra-broadband quantum cascade laser operating from 1.88 to 3.82 THz
arXiv:1612.07594 · doi:10.1515/nanoph-2017-0024
Abstract
We report on a heterogeneous active region design for terahertz quantum cascade laser based frequency combs. Dynamic range, spectral bandwidth as well as output power have been significantly improved with respect to previous designs. When operating individually the lasers act as a frequency comb up to a spectral bandwidth of 1.1 THz, while in a dispersed regime a bandwidth up to 1.94 THz at a center frequency of 3 THz can be reached. A self-detected dual-comb setup has been used to verify the frequency comb nature of the lasers.
References in corpus (6)
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Cited by in corpus (13)
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- Towards Compact and Real-Time Terahertz Dual-Comb Spectroscopy Employing a Self-Detection Scheme
- On-chip mid-infrared and THz frequency combs for spectroscopy
- Giant ultra-broadband photoconductivity in twisted graphene heterostructures
- High dynamic range, heterogeneous, terahertz quantum cascade lasers featuring thermally-tunable frequency comb operation over a broad current range
- Coherent multi-mode dynamics in a Quantum Cascade Laser: Amplitude and Frequency-modulated Optical Frequency Combs
- Active Stabilization of Terahertz Semiconductor Dual-Comb Laser Sources Employing a Phase Locking Technique
- Gain dynamics in a heterogeneous terahertz quantum cascade laser
- Regenerative Terahertz Quantum Detectors
- Homogeneous quantum cascade lasers operating as Terahertz frequency combs over their entire operational regime
- Self-Referenced Terahertz Semiconductor Dual-Comb Sources
- An antipodal Vivaldi antenna for improved far-field properties and polarization manipulation of broadband terahertz quantum cascade lasers
- Coexisting frequency combs spaced by an octave in a monolithic quantum cascade laser