The G&H pulse picker product is used, typically, external to a laser cavity and is designed to separate a single pulse, from a train of laser pulses up to 100 MHz pulse rate, and re-direct it in a different optical path. These high speed Acousto-Optic modulators are ideal for use in high speed optical pulse picking external to a laser cavity.
These Modulators use high efficiency, antireflection coated, TeO2 or GaP crystals. An option available include AR coated, input / output coupling optics mounted in an integral precision alignment assembly, for optimum focusing of an input laser beam and collimation of the deflected output beam. The combination of high RF carrier frequency and optimum lens design results in a large angular separation, of up to 75 mrad, between the zero and the first order deflected output beams. This makes it easy to separate the two beams in space and maintain a static contrast ratio of at least 500:1.
The G&H's Cavity Dumper is for use with Argon, Dye, and Ti:Sapphire mode locked lasers. It is designed to be used inside the laser cavity and separates a single pulse from the pulsed energy circulating in that laser cavity and re-direct it to a different optical path. This device usually requires a three mirror cavity with 2 of the mirrors focusing to the required beam waist. An alignment stage accessory for the BR model and the FOA models is available separately in the AO Accessories section.