Detection sensitivity of laser feedback interferometry using a terahertz quantum cascade laser
نویسندگان
چکیده
منابع مشابه
Terahertz Radar Cross Section Characterization using Laser Feedback Interferometry with a Quantum Cascade Laser
Complete List of Authors: Lui, Hoi Shun; The University of Queensland, School of Information Technology and Electrical Engineering; Chalmers University of Technology, Department of Signals and Systems Taimre, Thomas; The University of Queensland, School of Mathematics and Physics Bertling, Karl; The University of Queensland, School of Information Technology and Electrical Engineering Lim, Yah L...
متن کاملThree-dimensional terahertz imaging using swept-frequency feedback interferometry with a quantum cascade laser.
We demonstrate coherent three-dimensional terahertz imaging by frequency modulation of a quantum cascade laser in a compact and experimentally simple self-mixing scheme. Through this approach, we can realize significantly faster acquisition rates compared to previous schemes employing longitudinal mechanical scanning of a sample. We achieve a depth resolution of better than 0.1 μm with a power ...
متن کاملHyperuniform disordered terahertz quantum cascade laser
Laser cavities have been realized in various different photonic systems. One of the forefront research fields regards the investigation of the physics of amplifying random optical media. The random laser is a fascinating concept because, further to the fundamental research investigating light transport into complex media, it allows us to obtain non-conventional spectral distribution and angular...
متن کاملSpectral behavior of a terahertz quantum-cascade laser.
In this paper, the spectral behavior of two terahertz (THz) quantum cascade lasers (QCLs) operating both pulsed and cw is characterized using a heterodyne technique. Both lasers emitting around 2.5 THz are combined onto a whisker contact Schottky diode mixer mounted in a corner cube reflector. The resulting difference frequency beatnote is recorded in both the time and frequency domain. From th...
متن کاملTerahertz Nanoscopy of Plasmonic Resonances with a Quantum Cascade Laser
We present a terahertz (THz) scattering near-field optical microscope (s-SNOM) based on a quantum cascade laser implemented as both source and detector in a self-mixing scheme utilizing resonant quartz tuning forks as a sensitive nanopositioning element. The homemade s-SNOM, based on a resonant tuning fork and metallic tip, operates in tapping mode with a spatial resolution of ∼78 nm. The quant...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Optics Letters
سال: 2019
ISSN: 0146-9592,1539-4794
DOI: 10.1364/ol.44.003314