HFO Fiber Optic Hydrophone
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HFO-690 Fiber Optic Hydrophone

The HFO-690 is the latest generation optical fiber hydrophone designed to uniquely support high intensity fields for applications such as HIFU, providing both acoustic pressure and temperature measurements simultaneously.

Key Features and Benefits
  • Support high acoustic pressures up to 500 MPa
  • Bandwidth limiting filters to reduce Noise Equivalent Pressure
  • Easy to use touch screen user interface
  • Simultaneous temperature measurement
  • Simple self-calibration routine
  • Visible light source to simplify alignment
  • Simple cleaving procedure to repair probes within minutes
  • Optically filtered to reject stray environmental light
The HFO-690 is the latest generation optical fiber hydrophone designed to uniquely support high intensity fields for applications such as HIFU, providing both acoustic pressure and temperature measurements simultaneously. Whereas traditional piezo-electric hydrophones were susceptible to damage, the HFO can withstand acoustic pressures up to 500 MPa. Furthermore, the HFO system was designed to be easy to use. Operation with a visible wavelength makes the alignment process simpler and safer to use.
HFO-690
Frequency Response 3 kHz to 150 MHz
Nominal Acoustic Sensitivity 6 mV / MPa
Noise Equivalent Pressure 0.25 MPa at 2 MHz BW
0.3 Mpa at 10 MHz BW
0.5 MPa at 100 MHz BW
Laser Source 690 nm
Laser Classification Class 3B
Spatial Resolution 100 μm
Temperature Sensitivity 10 mV / °C
Operating Water Temperature Range 5 to 95 °C
Length of Optical Fiber 2 m

All specifications subject to change.

Related Resources

HFO-690 Data Sheet

HFO-690 Data Sheet

Get technical specs and information for the HFO-690 the latest generation optical fiber hydrophone.

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Getting Started with the HFO-690

Getting Started with the HFO-690

Learn how to get started with the HFO-690 the latest generation optical fiber hydrophone.

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Hydrophone Handbook

Hydrophone Handbook

Learn how to select the best hydrophone for your application.

Read Handbook

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