Acousto-optic deflectors (AODs) are high-performance beam steering devices designed for applications that demand ultra-fast, precise, and reliable control of laser beams. By exploiting the interaction between light and acoustic waves in a crystal, these deflectors enable continuous variation of the output beam angle over a defined range, supporting both one-dimensional and two-dimensional scanning architectures. Compared with mechanical scanners such as galvanometer mirrors, AODs deliver much higher scanning speeds with no moving parts, making them ideal for high-throughput and long-lifetime operation in modern photonics systems.

These AODs are optimized for operation at 355 nm and 1064 nm, covering key industrial and scientific laser wavelengths. The product line includes configurations with different drive frequencies, optical apertures, and scan angles to support a wide variety of beam sizes and field-of-view requirements. For example, models with larger optical apertures are well suited for handling wider beams and higher powers, while higher-frequency versions provide larger angular deflection ranges for applications that require broad scanning coverage. All models are designed for use with linearly polarized light, ensuring stable and predictable diffraction behavior in demanding optical setups.

In operation, an acousto-optic deflector uses a radio-frequency (RF) signal to generate an ultrasonic wave inside a transparent crystal. As the frequency of this RF signal is tuned, the resulting acoustic grating period changes, causing the diffraction angle of the light to vary. Importantly, by maintaining a constant RF power while sweeping the frequency, the position of the diffracted beam can be scanned rapidly across the target plane while preserving nearly constant diffraction efficiency. This characteristic is crucial for applications requiring uniform illumination or exposure across the scan field, such as high-speed imaging and precision material processing.

The implemented scanning modes typically include continuous (raster or sawtooth) scanning for imaging and inspection tasks, as well as random-access scanning where the beam can jump rapidly between discrete positions with microsecond-scale response times. Compared with conventional mechanical scanners, AODs achieve ultra-high scanning speeds limited primarily by acoustic transit time in the crystal and RF driver performance. This makes them ideal for applications like laser beam multiplexing, dynamic spot positioning, and high-speed pattern generation, where rapid beam repositioning directly translates into higher throughput and shorter cycle times.

Thanks to their wide spectral operating range and carefully engineered interaction geometries, these acousto-optic deflectors provide high scanning resolution and excellent optical throughput. The high resolution arises from the large number of resolvable spots achievable across the scan angle, determined by the interaction length and acoustic bandwidth. At the same time, the devices are designed to minimize insertion loss and maintain strong first-order diffraction efficiency, preserving beam quality and power density at the workpiece or imaging plane. This balance of resolution, speed, and efficiency is particularly important in tightly focused laser systems, where any loss of power or beam distortion can compromise system performance.

With models covering wavelengths of 355 nm and 1064 nm and frequency options such as 100 MHz, 110 MHz, 170 MHz, and 200 MHz, system designers can select the optimum combination of aperture, scan angle, and drive conditions to match their specific application. Typical uses include precision laser processing (micromachining, drilling, marking, and patterning), optical inspection of semiconductor wafers and flat panel displays, and high-speed scanning-based imaging systems in industrial and scientific environments. The robust design and non-mechanical operation of these AODs help ensure long-term stability, low maintenance requirements, and consistent performance in continuous or high-duty-cycle operation.