High Power & PM Optical Components

Phsonic™ Optical Microphone (High-Frequency Version) features high sensitivity, wide bandwidth, and a compact design. It requires no acoustic matching medium and does not rely on inertial components for sensing. The measured acoustic pressure signals are free from tail oscillations. Additionally, its all-fiber construction is immune to external electromagnetic interference, providing excellent environmental adaptability, which makes it ideal for applications in non-contact nondestructive testing and high-frequency acoustic wave detection.

Features

Electromagnetic Interference Resistance
No Need For An Acoustic Matching Layer
Long-Distance Transmission
High Resolution (3.5μPa@500kHz(0dB))
High Sensitivity (200mV/Pa@1kHz)
Wide Bandwidth (50kHz~5MHz )
Large Dynamic Range (95dB)
Real-time Synchronization
Fully Self-Developed Internal Components

Applications

Nondestructive testing
Medical diagnosis
Industrial monitoring (Gas concentration detection etc.

Principle

Phsonic™ Optical Microphone is an ultrasonic sensor based on laser interferometry technology, achieving high-precision acoustic wave detection by measuring slight changes in air refractive index.

1）Sensor Probe

Based on laser interferometry detection technology, it analyzes the changes in air refractive index caused by sound pressure in the F-P cavity, enabling high-precision acoustic wave measurement.

2）Demodulator

The demodulator integrates an optical interferometer and works in conjunction with the sensor probe to accurately analyze the cavity length changes in the sensor probe. By combining optical fiber multiplexing technology, it enables simultaneous demodulation of multiple sensitive elements.

Product specifications

NDT Applications

· Material Defect Inspection · New Energy Batteries

· Laser Welding · Aerospace

· Additive Manufacturing · Electronic Circuits

Wide Material Compatibility

Suitable for various materials and structures, especially for inspecting complex structures and composite materials.

Fast Inspection Speed

No need for precise clamping or positioning, easy to operate, and reduces time cost.

Enhanced Inspection Quality

High resolution, high sensitivity, and superior detection quality.

Medical Diagnosis Applications

Application Scenarios

· Cardiovascular System

· Gastrointestinal System

Photoacoustic Imaging (PAI) combines the high contrast of optical imaging with the high resolution of ultrasound imaging for disease diagnosis and tissue assessment.

The Phsonic™ Optical Microphone, with its non-contact operation, high sensitivity, and strong penetration, serves as a key sensor in PAI, enhancing imaging resolution and diagnostic accuracy.

Industrial Inspection Applications

Application Scenarios

· Partial Discharge Detection

· Atmospheric Detection