Mid-infrared quantum cascade laser frequency combs with a microstrip-like line waveguide geometry

@article{Kapsalidis2020MidinfraredQC,
  title={Mid-infrared quantum cascade laser frequency combs with a microstrip-like line waveguide geometry},
  author={Filippos Kapsalidis and Barbara Schneider and Matthew Singleton and Mathieu Bertrand and Emilio Gini and Mattias Beck and J{\'e}r{\^o}me Faist},
  journal={Applied Physics Letters},
  year={2020},
  volume={118},
  pages={071101}
}
In this work, a design for a mid-infrared quantum cascade laser frequency comb source that enhances the high frequency response and the comb characteristics of the device is presented. A state-of-the-art active region, grown on a heavily n-doped InP:Si substrate, was processed into a buried heterostructure with a microstrip-like line waveguide. As a result, the repetition rate frequency frep, around 11.09 GHz, can be locked to an injected narrow-linewidth radio frequency (RF) signal, over a… 

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References

SHOWING 1-10 OF 43 REFERENCES

Dual comb operation of λ ̃ 8.2 μm quantum cascade laser frequency comb with 1 W optical power

In this work, we report the characterization of a quantum cascade laser frequency comb with an optical power of 1.05 W at λ∼8.2 μm. A 4.5 mm long device has a high reflectivity coating on the back

Plasmon-enhanced waveguide for dispersion compensation in mid-infrared quantum cascade laser frequency combs.

The potential of dispersion-engineered waveguides for the fabrication of highly stable and reliable quantum cascade laser FCs with high output power across the mid-infrared is demonstrated.

Injection locking of mid‐infrared quantum cascade laser at 14 GHz, by direct microwave modulation

Compact laser sources operating in mid infrared spectral region with stable emission are important for applications in spectroscopy and wireless communication. Quantum cascade lasers (QCL) are unique

Rf-modulation of mid-infrared distributed feedback quantum cascade lasers.

The electrical and optical characterization and theoretical modeling of the transient behavior of regular 4.5-μm single-mode emitting distributed feedback (DFB) quantum cascade lasers (QCLs) leads to the first experimental observation of the single-sideband regime in such kind of devices.

Coupled‐Waveguides for Dispersion Compensation in Semiconductor Lasers

A dual waveguide for intracavity dispersion compensation in semiconductor lasers is presented and applied to a short mid‐infrared wavelength quantum cascade laser operating in the first atmospheric

Mid-infrared frequency comb based on a quantum cascade laser

A compact, broadband, semiconductor frequency comb generator that operates in the mid-infrared, and it is demonstrated that the modes of a continuous-wave, free-running, broadband quantum cascade laser are phase-locked.

Dual-comb spectroscopy using plasmon-enhanced-waveguide dispersion-compensated quantum cascade lasers.

A purely computational phase and timing-correction procedure is used to validate the coherence of the quantum cascade lasers frequency combs and to enable coherent averaging over the time scales investigated.

5-ps-long terahertz pulses from an active-mode-locked quantum cascade laser

A significant research effort toward the generation of short terahertz (THz) pulses using quantum cascade lasers (QCLs) has been undertaken over the past few years. This is motivated by the desire to

Mode-locked short pulses from an 8 μm wavelength semiconductor laser

It is demonstrated that careful quantum design of the gain medium and control over the intermode beat synchronization enable transform-limited picosecond pulses from QCL frequency combs, and that both anti-phase and in-phase synchronized states exist in QCLs.

Terahertz semiconductor-heterostructure laser

A monolithic terahertz injection laser that is based on interminiband transitions in the conduction band of a semiconductor (GaAs/AlGaAs) heterostructure is reported, which is very promising for extending the present laser concept to continuous-wave and high-temperature operation, which would lead to implementation in practical photonic systems.