Results 71 to 80 of about 3,266 (205)

Interferometry feedback in the laser resonator. Parametric model

Bulletin of Taras Shevchenko National University of Kyiv. Series: Physics and Mathematics, 2019
The article is devoted to an alternative view on the explanation of the mechanism of action of devices based on laser feedback interferometry (LFI-model), which is caused by contradictions between the theory of existing models and practical results.
openaire   +2 more sources

Self-Mixing Interferometer for Acoustic Measurements through Vibrometric Calibration

Sensors
The Self-Mixing Interformeter (SMI) is a self-aligned optical interferometer which has been used for acoustic wave sensing in air through the acousto-optic effect.
Simon Chanu-Rigaldies, Pierre Lecomte, Sébastien Ollivier, Thomas Castelain   +3 more
doaj   +1 more source

Improving Measurement Sensitivity for a Displacement Sensor Based on Self-Mixing Effect

IEEE Photonics Journal, 2018
When a part of light emitted by a laser is back-reflected or back-scattered from an external target and re-enters the laser cavity, both the laser intensity and its wavelength can be modulated. This is so-called self-mixing effect (SME).
Yuxi Ruan, Bin Liu, Yanguang Yu, Jiangtao Xi, Qinghua Guo, Jun Tong   +5 more
doaj   +1 more source

Stabilized fiber-optic Mach–Zehnder interferometer for carrier-frequency rejection

, 2013
We have demonstrated stabilization of a fiber-optic Mach–Zehnder interferometer, with a centimeter-scale path difference, to the transmission minimum for the carrier wave of a frequency-modulated laser beam.
Freegarde, Tim, Woods, Jonathan, Cooper, Nathan, Dunning, Alexander, Bateman, James   +4 more
core   +1 more source

Deep Learning Enabled Ultrafast Optical Spectral Phase Retrieval via Unbalanced‐Intensity Autocorrelation

Nanophotonics, Volume 15, Issue 10, 27 May 2026.
Phase‐enabled nonlinear gating with unbalanced intensity (PENGUIN) enables reconstruction of the complete ultrafast optical field from one‐dimensional nonlinear interferometric autocorrelation traces. Combined with deep learning, the DeepPENGUIN framework enables real‐time spectral phase retrieval without spectrally resolved detection or iterative ...
Tae‐In Jeong, Eunji Choi, Mengkun Liu, Seungchul Kim, Alexander Gliserin   +4 more
wiley   +1 more source

Membrane-Mediated Conversion of Near-Infrared Amplitude Modulation into the Self-Mixing Signal of a Terahertz Quantum Cascade Laser

Photonics
A platform for converting near-infrared (NIR) laser power modulation into the self-mixing (SM) signal of a quantum cascade laser (QCL) operating at terahertz (THz) frequencies is introduced.
Paolo Vezio, Andrea Ottomaniello, Leonardo Vicarelli, Mohammed Salih, Lianhe Li, Edmund Linfield, Paul Dean, Virgilio Mattoli, Alessandro Pitanti, Alessandro Tredicucci   +9 more
doaj   +1 more source

Study of QCL Laser Sources for the Realization of Advanced Sensors

Sensors, 2015
We study the nonlinear dynamics of a quantum cascade laser (QCL) with a strong reinjection provided by the feedback from two external targets in a double cavity configuration.
Giuseppe de Risi, Lorenzo Luigi Columbo, Massimo Brambilla   +2 more
doaj   +1 more source

Coherent Beam Combining Using an Internally Sensed Optical Phased Array of Frequency-Offset Phase Locked Lasers

Photonics, 2020
Coherent beam combining can be used to scale optical power and enable mechanism-free beam steering using an optical phased array. Coherently combining multiple free-running lasers in a leader-follower laser configuration is challenging due to the need to
Lyle E. Roberts, Robert L. Ward, Craig Smith, Daniel A. Shaddock   +3 more
doaj   +1 more source

A programmable optical angle clamp for rotary molecular motors

, 2007
Optical tweezers are widely used for experimental investigation of linear molecular motors. The rates and force dependence of steps in the mechanochemical cycle of linear motors have been probed giving detailed insight into motor mechanisms. With similar
Berry, RM, Futai, Masamitsu, Bai, Fan, Futai, M, Bilyard, Thomas, Pilizota, T, Berry, Richard, Bilyard, T, Bai, F, Hosokawa, H, Hosokawa, Hiroyuki, Pilizota, Teuta, Berry, Richard M., Berry, Richard Michael   +13 more
core   +1 more source

Lithium Niobate Quadratic Integrated Nonlinear Photonics: Enabling Ultra‐Wide Bandwidth and Ultrafast Photonic Engines

Nanophotonics, Volume 15, Issue 9, 13 May 2026.
This perspective surveys emerging quantum and classical photonic applications across operating wavelengths and timescales, highlighting persistent technological gaps in integrated light sources. We examine the unique advantages of quadratic nonlinear photonics on the thin‐film lithium niobate (TFLN) platform and discuss strategies for realizing ...
Meng Tian, Guanyu Han, Ziyao Feng, Yu Liu, Yu Wang, Wenjun Deng, Ayed Al Sayem, Qiushi Guo   +7 more
wiley   +1 more source