The preliminary numerical simulation results obtained in the analysis of a landmine detection system based on laser excitation of acoustic - seismic waves in the soil and observing its surface vibration above the embedded landmine are presented. The presented numerical simulations comprise three main parts: 1) Laser oscillator and laser beam propagation and absorption in soil; a laser oscillator operated in Q-switched regime is considered; different laser wavelengths are investigated. 2) Acoustic - seismic wave generation by absorption in soil of laser pulse energy; 3) Evaluation of acoustic - seismic wave generation by the buried in soil landmine; 4) Comparison of Distributed Feed- Back Fiber Laser (DFB-FL) and Laser Doppler Vibrometer (LDV) detector used for soil vibrations evaluation. The above mentioned numerical simulation is dedicated for evaluation of an integrated portable detection system.

Date Published: 8 May 2012
PDF: 11 pages
Proc. SPIE 8433, Laser Sources and Applications, 843315 (8 May 2012); doi: 10.1117/12.922158

Published in SPIE Proceedings Vol. 8433:
Laser Sources and Applications
Thomas Graf; Jacob I. Mackenzie; Helena Jelínková; John Powell, Editor(s)