FM0027-TL120-F02-1064
An acousto-optic modulator (AOM) is generally used outside a laser cavity to change the intensity of the incident laser light (amplitude modulation, AM). This can be simple ON/OFF modulation for rapid switching or variable-level modulation for intensity control. The modulation mode is determined by the RF driver type and can be digital (on/off) or analog (sine, square, linear, random and other waveforms). The AOM RF drive generally uses a fixed frequency. The key AOM parameters are rise/fall times, which define the achievable modulation speed or amplitude modulation bandwidth. Rise/fall times are proportional to the beam diameter inside the modulator. Therefore, the incident laser beam diameter must be controlled to obtain a fast rise time. An AOM can serve as a shutter, switching on and off cyclically at a set frequency, or as a variable attenuator that dynamically controls transmitted light intensity. Laser modulation is achieved by controlling the acoustic waves induced by radio frequency in the acousto-optic crystal. Moduoptik has designed and developed free-space AOM products from a single channel to as many as 24 channels, and fiber-coupled AOM products in polarization-maintaining and non-polarization-maintaining versions. Frequencies currently reach 300MHz, with rise times as low as 6ns. Moduoptik offers a range of RF drivers matched to AOM products; the appropriate RF driver can be selected according to the product datasheet.
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Overview
Specifications
| Parameter | Value |
|---|---|
| Operating wavelength | 1064 nm |
| Operating frequency | 120 MHz |
| Fiber type | 10/125 Double-Clad |
| Rise time | < 45 ns |
| Insertion loss | <1 dB |
Applications
Datasheet
Supplier Information
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