Fiber optic hydrophone - HFO series

  • Supports high sound pressures up to 500 MPa
  • Bandwidth limiting filter to reduce the noise equivalent pressure
  • Easy-to-use touchscreen user interface
  • Simultaneous temperature measurement
  • Simple self-calibration routine
  • Visible light source to simplify alignment
  • Simple splitting process for repairing probes within a few minutes
  • Optically filtered to block out stray light from the surroundings

Contact: Mr. Ralf Kott

Fiber optic measurement technology for high-power ultrasound

The Fiber optic hydrophone - HFO series was specially developed for applications where extremely high ultrasound intensities occur. Especially in areas such as HIFU applications (High Intensity Focused Ultrasound), the HFO series offers a reliable alternative to classic piezoelectric hydrophones. As an optical fiber hydrophone of the latest generation, the HFO-690 enables the precise detection of sound pressure fields even under conditions that would only be measurable to a limited extent or not at all with conventional sensor technology.

High load capacity with extreme sound pressures

A key advantage of the Fiber optic hydrophone - HFO series lies in its exceptionally high pressure resistance. While piezoelectric hydrophones are susceptible to damage or ageing at very high sound pressures, the HFO hydrophone is designed for sound pressures of up to 500 MPa. This makes it particularly suitable for high-energy ultrasonic fields, such as those found in therapeutic applications, ultrasound research or in the development of powerful sound sources.

Combination of sound pressure and temperature measurement

In addition, the Fiber optic hydrophone - HFO series not only measures the acoustic sound pressure, but also simultaneously records temperature changes. This combination provides valuable additional information, especially in applications with high energy input, where thermal effects play a decisive role. The HFO system thus supports a holistic analysis of ultrasonic fields and their interaction with the medium.

Easy handling and safe alignment

In addition to its high performance, the Fiber optic hydrophone - HFO series deliberately designed for user-friendly handling. Visible wavelength operation makes the alignment process considerably easier and at the same time increases the safety of the measurement setup. Users benefit from clear visual feedback when positioning the optical fiber, which reduces the time required for adjustment work and supports reproducible measurement results.

Future-proof solution for demanding measurement tasks

Overall, the Fiber optic hydrophone - HFO series is a powerful and robust solution for modern ultrasonic measurements. The combination of high pressure resistance, optical measurement technology and additional temperature detection makes the HFO series ideal for research and development environments where the highest demands are placed on measurement accuracy and reliability. For project-specific applications, we recommend customizing the system.

Specifications

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

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