wave propagation via laser ultrasound. Laser line source. IR laser focused on 19 mm line. Transmitted EM phase image of granite at 150 GHz. JS, M. Batzle, M. Prasad, N. Greeney & A. Yuffa Colorado School of Mines.
Laser line source
IR laser focused on 19 mm line
N. Greeney & A. Yuffa
Colorado School of MinesMeasuring electrical and mechanical properties of rocks on the submillimeter scale
Collaboration between Physics, Geophsysics and Petroleum Engineering
'low' frequency normal mode
'high' frequency normal mode
Funded by NSF MRI
Fit E field with 1D Fabry-Perot
model to get complex permittivity
Tip-sample distance .2mm
Wavelength about 1 mm
Tip-sample distance .6mm
McEvoy et al, 2009 oil shale conf.
Electronic Speckle Pattern Interferometry
Are grains floating?