@article{WANG2026, 
author = {Wei WANG and Shenggang LIU and Wei GU and Tianjiong TAO and Heli MA and Xiang WANG and Jidong WENG},
title = {Dual Wavelength All-Fiber Laser Interferometric Velocity Retest Technique},
year = {2026},
journal = {Chinese Journal of High Pressure Physics},
volume = {40},
number = {3},
keywords = {laser interferometry, Doppler velocimetry, wavelength division multiplexing, velocity retest},
url = {https://www.sciopen.com/article/10.11858/gywlxb.20251081},
doi = {10.11858/gywlxb.20251081},
abstract = {In order to meet the high reliability requirement of velocity measurement in shock wave and detonation experiments, a new velocity measurement method named dual-wavelength laser interferometer was proposed based on wavelength division multiplexing/demultiplexing technique. A verification system was designed with 1550.0 and 1530.3 nm wavelengths, and the dynamic verification experiments under low- and high- speed conditions were carried out on the light gas gun. The dynamic experimental results show that the free surface velocity of the sample can be measured independently with a single optical fiber probe, and the velocity measurement results obtained at two wavelengths exhibit good consistency, with the relative deviation of the velocity within ±1.5%.}
}