Low Frequency Optical Geophone LSU Reference: 0517 - An advanced
geophone with extended low frequency response and improved
sensitivity - Measuring ground motion and vibration - Oil
exploration - surface explorations and downhole explorations -
Improved Seismic imaging of deep targets - Resonant frequencies
below 0.5 Hz Geophones are instruments used for measuring ground
motion and vibrations. They are useful in oil exploration,
mining, earthquake detection, machine vibration detection, and
intrusion detection. The majority of commercially available
geophones use moving coil technology that produces analog
signals proportional to the velocity motion. Typical resonant
frequencies are about 10 Hz. However, the moving coil design
limits the use of geophones in the lower frequency ranges, hence
limiting the depth to which useful acoustic waves can penetrate.
The Low Frequency Optical Geophone developed at LSU is an
advanced geophone with extended low frequency response and
improved sensitivity. The low frequency