[HTML][HTML] A review on piezoelectric energy harvesting: materials, methods, and circuits

S Priya, HC Song, Y Zhou, R Varghese… - Energy Harvesting and …, 2017‏ - degruyter.com
Piezoelectric microelectromechanical systems (PiezoMEMS) are attractive for develo**
next generation self-powered microsystems. PiezoMEMS promises to eliminate the costly …

Private communication with quantum cascade laser photonic chaos

O Spitz, A Herdt, J Wu, G Maisons, M Carras… - Nature …, 2021‏ - nature.com
Mid-infrared free-space optical communication has a large potential for high speed
communication due to its immunity to electromagnetic interference. However, data security …

[HTML][HTML] Sensing and imaging using laser feedback interferometry with quantum cascade lasers

AD Rakić, T Taimre, K Bertling, YL Lim, P Dean… - Applied Physics …, 2019‏ - pubs.aip.org
Quantum cascade lasers (QCLs) are high-power sources of coherent radiation in the
midinfrared and terahertz (THz) bands. Laser feedback interferometry (LFI) is one of the …

Chaotic light at mid-infrared wavelength

L Jumpertz, K Schires, M Carras… - Light: Science & …, 2016‏ - nature.com
The onset of nonlinear dynamics and chaos is evidenced in a mid-infrared distributed
feedback quantum cascade laser both in the temporal and frequency domains. As opposed …

[HTML][HTML] Frequency combs induced by optical feedback and harmonic order tunability in quantum cascade lasers

C Silvestri, X Qi, T Taimre, AD Rakić - APL Photonics, 2023‏ - pubs.aip.org
This study investigates the interaction between frequency combs and optical feedback
effects in Quantum Cascade Lasers (QCLs). The theoretical analysis reveals new …

[HTML][HTML] Measurements of the linewidth enhancement factor of mid-infrared quantum cascade lasers by different optical feedback techniques

L Jumpertz, F Michel, R Pawlus, W Elsäßer, K Schires… - AIP Advances, 2016‏ - pubs.aip.org
Precise knowledge of the linewidth enhancement factor of a semiconductor laser under
actual operating conditions is of prime importance since this parameter dictates various …

Observation of optical feedback dynamics in single-mode terahertz quantum cascade lasers: Transient instabilities

X Qi, K Bertling, T Taimre, G Agnew, YL Lim, T Gillespie… - Physical Review A, 2021‏ - APS
We provide an experimental evidence of transient instabilities (TIs) in a terahertz (THz)
quantum cascade laser (QCL) under optical feedback, in contrast to the widely accepted …

[HTML][HTML] Feedback regimes of lfi sensors: Experimental investigations

K Bertling, X Qi, T Taimre, YL Lim, AD Rakić - Sensors, 2022‏ - mdpi.com
In this article, we revisit the concept of optical feedback regimes in diode lasers and explore
each regime experimentally from a somewhat unconventional point of view by relating the …

Relative intensity noise of a mid-infrared quantum cascade laser: insensitivity to optical feedback

BB Zhao, XG Wang, J Zhang, C Wang - Optics express, 2019‏ - opg.optica.org
This article experimentally demonstrates that the relative intensity noise (RIN) of a mid-
infrared quantum cascade laser is insensitive to the optical feedback for feedback ratios up …