TY  - JOUR
AU  - WANG, Wei
AU  - LIU, Shenggang
AU  - GU, Wei
AU  - TAO, Tianjiong
AU  - MA, Heli
AU  - WANG, Xiang
AU  - WENG, Jidong
PY  - 2026
TI  - Dual Wavelength All-Fiber Laser Interferometric Velocity Retest Technique
JO  - Chinese Journal of High Pressure Physics
SN  - 1000-5773
VL  - 40
IS  - 3
AB  - 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%.
UR  - https://doi.org/10.11858/gywlxb.20251081
DO  - 10.11858/gywlxb.20251081