[HTML][HTML] Terahertz near-field nanoscopy based on detectorless laser feedback interferometry under different feedback regimes
Near-field imaging techniques, at terahertz frequencies (1–10 THz), conventionally rely on
bulky laser sources and detectors. Here, we employ a semiconductor heterostructure laser …
bulky laser sources and detectors. Here, we employ a semiconductor heterostructure laser …
Phase-Shifted Quadrature-Phase demodulation based on a Multi-Longitudinal mode laser Self-Mixing sensor for displacement measurement
We present a novel method by a multi-longitudinal mode laser with a waveplate to generate
two orthogonally polarized signals with stable and adjustable phase differences. The phase …
two orthogonally polarized signals with stable and adjustable phase differences. The phase …
[HTML][HTML] Self-mixing laser distance-sensor enhanced by multiple modulation waveforms
F Cavedo, P Esmaili, M Norgia - Sensors, 2022 - mdpi.com
Optical rangefinders based on Self-Mixing Interferometry are widely described in literature,
but not yet on the market as commercial instruments. The main reason is that it is relatively …
but not yet on the market as commercial instruments. The main reason is that it is relatively …
Convolutional neural network for self-mixing interferometric displacement sensing
Self-mixing interferometry is a well established interferometric measurement technique. In
spite of the robustness and simplicity of the concept, interpreting the self-mixing signal is …
spite of the robustness and simplicity of the concept, interpreting the self-mixing signal is …
Model of multiple mode gain competition in self-mixing laser diode
H Liu, SJ Li, YQ You, JW Wang, J Sun, L Zhang… - Optik, 2023 - Elsevier
Multiple mode gain competition in self-mixing laser diode has been investigated assisted by
output optical spectrum. Experimental results show that multi-peaks appear in self-mixing …
output optical spectrum. Experimental results show that multi-peaks appear in self-mixing …
High-availability displacement sensing with multi-channel self mixing interferometry
Laser self-mixing is in principle a simple and robust general purpose interferometric method,
with the additional expressivity which results from nonlinearity. However, it is rather sensitive …
with the additional expressivity which results from nonlinearity. However, it is rather sensitive …
Integrating embedded neural networks and self-mixing interferometry for smart sensors design
Self-mixing interferometry is a measurement approach in which a laser beam is re-injected
into the emitting laser itself after reflection on a target. Information about the position of the …
into the emitting laser itself after reflection on a target. Information about the position of the …
[PDF][PDF] 基于小波阈值滤波和SG 滤波相结合的激光自混合干涉微位移重构 D
尤亚强, 李鑫涛, 刘晖, 和丹 - 强激光与粒子束, 2024 - researching.cn
在半导体激光器自混合干涉(SMI) 微位移测量中, 相位信息的准确提取对于位移的高精度重构至
关重要. 然而, 测量噪声会对SMI 信号引入相位误差, 位移重构精度较低. 针对信号去噪问题 …
关重要. 然而, 测量噪声会对SMI 信号引入相位误差, 位移重构精度较低. 针对信号去噪问题 …
Scanless optical feedback imaging principle by single-pixel compressed sensing
M Dabbicco, A Lupo, PS Labini - Applied Optics, 2021 - opg.optica.org
Optical feedback in lasers is being used for unconventional imaging of fluid dynamics,
pressure fields, material properties, and free-carrier distribution, especially in spectral …
pressure fields, material properties, and free-carrier distribution, especially in spectral …
Towards a label free coherent detectorless imaging module in photonic integrated circuits
We discuss and present preliminary experimental evidence of three novel add-on
functionalities that can make Optical Feedback Imaging a truly small footprint and label-free …
functionalities that can make Optical Feedback Imaging a truly small footprint and label-free …