Differential two-wave mixing interferometer for crack detection in metallic structures based on laser-induced ultrasound
D Zhu, Q Cheng, J He, W Hong, W Liu, S Yang… - Optics and Lasers in …, 2023 - Elsevier
To meet the need of high-sensitivity crack detection in metallic structures with a contactless
method, a differential two-wave mixing interferometer based on two nonlinear Bi 12 SiO 20 …
method, a differential two-wave mixing interferometer based on two nonlinear Bi 12 SiO 20 …
A frequency‐domain non‐contact photoacoustic microscope based on an adaptive interferometer
A frequency‐domain, non‐contact approach to photoacoustic microscopy (PAM) that
employs amplitude‐modulated (0.1–1 MHz) laser for excitation (638‐nm pump) in …
employs amplitude‐modulated (0.1–1 MHz) laser for excitation (638‐nm pump) in …
[HTML][HTML] Non-contact detection of hidden damages in dispersive media using the instantaneous phase
DA Collazos-Burbano, JL Ealo… - Journal of the Brazilian …, 2023 - Springer
The assessment of dispersive media may become a challenge due to the high attenuation
ratios, anisotropy and geometrical particularities of the specimen under study. Besides, non …
ratios, anisotropy and geometrical particularities of the specimen under study. Besides, non …
[PDF][PDF] 差动式双波混合干涉微小振动检测系统
朱东旭， 龚玉婷， 刘维， 孔明， 王道档 - ACTA PHOTONICA SINICA, 2023 - researching.cn
针对工业环境下粗糙金属表面微小振动的在线测量需求, 提出了一种基于差动式双波混合干涉的
微小振动检测系统. 该系统将极性相反的高电压分别施加在两块硅酸铋晶体上以得到差动式双路 …
微小振动检测系统. 该系统将极性相反的高电压分别施加在两块硅酸铋晶体上以得到差动式双路 …
Semiconductor optical amplifier fiber-ring laser for FBG dynamic strain sensing with an adaptive two-wave mixing demodulator
Y Zhao, C Tao, H Wang, J Xiao, J Li… - … Sensor Systems and …, 2021 - spiedigitallibrary.org
In this paper, we propose a semiconductor optical amplifier (SOA)-fiber ring laser (FRL) for
fiber Bragg grating (FBG) dynamic strain sensing system with an adaptive demodulator …
fiber Bragg grating (FBG) dynamic strain sensing system with an adaptive demodulator …
[HTML][HTML] Photorefractive ultrasonic sensor for weld quality monitoring
S Zamiri, M Salfinger, M Gruber, M Stückler… - Open Access Library …, 2017 - scirp.org
We report on a laser ultrasonic receiver based on two wave mixings in two nonlinear
Bi12SiO20 (BSO) photorefractive crystals and its application for welded joints inspection …
Bi12SiO20 (BSO) photorefractive crystals and its application for welded joints inspection …
[HTML][HTML] Imaging microstructure on optically rough surfaces using spatially resolved acoustic spectroscopy
Featured Application Measurement of material microstructure on industrially relevant surface
finishes. Abstract The microstructure of a material defines many of its mechanical properties …
finishes. Abstract The microstructure of a material defines many of its mechanical properties …
Method and device for laser-optical detection of a surface movement of a sample using reference beams respectively superimposed on measurement beams in …
BJ Reitinger - US Patent 9,651,364, 2017 - Google Patents
US9651364B2 - Method and device for laser-optical detection of a surface movement of a sample
using reference beams respectively superimposed on measurement beams in …
using reference beams respectively superimposed on measurement beams in …
Laser-akustische Messtechnik in der Materialcharakterisierung
T Windisch - 2016 - publica.fraunhofer.de
Prüfsysteme, welche die Ausbreitungseigenschaften elastischer Wellen zur Ableitung
spezifischer Messgrößen nutzen, sind etablierte Messverfahren. Voraussetzung für …
spezifischer Messgrößen nutzen, sind etablierte Messverfahren. Voraussetzung für …