Eta100 L Ultra

Optical Hydrophone

XARION's Eta100 L Ultra is a robust, large-bandwidth membrane-free hydrophone. Designed for ultrasound sensing in the kPa to MPa regime, it is particularly suited to the characterization required for medical and industrial ultrasonics equipment. Using patented technology, the Eta100 L Ultra sensor is immune to damage from high pressure amplitudes. It offers superior measurement bandwidth in a small form factor.


  • Fiber-coupled, membrane-free optical hydrophone
  • Frequency range: 50 kHz–10 MHz with flat frequency response
  • Dynamic range: 20 mPa–1 MPa
  • Immunity to electromagnetic interference (EMI)