The ML series Mode Lockers are manufactured from high quality fused silica acousto-optic material. The RF sound field is generated with Lithium Niobate transducers. The user can specify window configuration, operating frequency, and mode spacing in order to optimise system performance.

The MLR Series Mode Locker is an acoustic standing-wave device with resonant mode spacing determined by the thickness of the acousto-optic material. When an integral number of acoustic half wavelengths are present across the material, standing waves are formed and modulate the laser cavity at twice the applied RF frequency.