Acoustic pv is a high-precision laser beam control device based on acoustic light, which achieves rapid and precise control of the ejection beam angle by regulating the frequency of radiofrequency signals applied to the crystal. The technology combines acoustic wave transmission characteristics with photo-spill behaviour and is widely used in areas such as laser scanning, imaging and microprocessing. This paper will provide a systematic presentation of acoustic deflectors from the principles of work, key performance parameters, typical device characteristics and system integration。
I. Rationale and basic structure
The centrepiece of the acoustic deflector is the acoustic crystal (e. G. Teo2, quartz, sapphire, etc.), which stimulates ultrasound within the crystal to form a cyclical refraction rate grid when the radio frequency signal acts as a pressure exchanger attached to the crystal surface. The direction of the incoming laser, which is derived from prague at the time of passing through the raster, is deflected by the frequency of the acoustic waves, thus enabling beam scanning or orientation。
Key performance parameters
Iii. Typical device and material selection
Different materials apply to different bands and power levels:
In the case of g&h products, the aodf series covers various configurations:
Iv. System integration and driver control
The performance of the acoustic deflector is highly dependent on the compatibility of the radio frequency drive. Common drivers, such as the 6,000 series, provide a two-channel 15-w output, support multi-frequency bands (20–450 mhz), have fast parallel interfaces and usb controls, and apply to multiple-channel scanning and phase synchronization controls。
For example, in a two-dimensional scanning system, two transformer cascades can be used, matching the double-channel output of the 6,000 drive, to achieve rapid beam positioning within the x-y plane. In addition, the drive supports a real-time modem of frequency, range and phase, which applies to any waveform generation and multi-beam output。
Main areas of application
Vi. Summary and outlook
As a solid, non-mechanical beam control device, the acoustic deflector has the advantage of high speed, high accuracy and high reliability. Its applications are expanding with the development of ultraviolet and infrared laser technology. In the future, acoustic circuitrs will continue to move towards wider broadband, greater apertures, higher power tolerance and more compact integration, providing core beam manipulation capabilities for advanced manufacturing and optical systems。
