Pulsed laser pulse selector system pulseSelect
single pulse

pulsed laser pulse selector system
pulsed laser pulse selector system
pulsed laser pulse selector system
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pulsed laser, single pulse

Max.: 40,000,000 Hz

Min.: 310 Hz


Acousto-Optical Single Pulse Selector pulseSelect is an acousto-optical pulse picker, developed for the special demands of femtosecond laser technology. Pulse distortion is minimized by a low dispersive design and the use of reflective optics. High repetition rates and high contrast rates are achieved by using acousto-optical elements. The pulse repetition rate can be reduced by an adjustable internal frequency divider or by external triggering. Pulse picking with low division ratios down to fREP/2 are possible. pulseSelect has an integrated RF power limitation and protection circuit to prevent modulator damage. For highest stability the phase of the RF carrier frequency is locked to the repetition rate of the laser in use. At a Glance • Reduction of the repetition rate of mode-locked lasers • fs or ps mode-locked laser (e.g. Ti:Sapphire) • Low dispersion design suitable for ultra-short pulses down to < 20 fs • Division ratio continuously variable between 2 … 260,000 • Synchronized to laser seed with internal trigger • Single-shot up to 3 MHz with external TTL trigger • External trigger-gate mode Single Stage Pulse Picker with pulseSelect The Single pulseSelect consists of an optical module and control electronics. A Bragg cell represents the most important part of the optics, which selects individual pulses from the laser beam due to the acousto-optical effect. Focusing mirror, collimator mirror and a beam stop for the zero-order beam complete the setup. The driver electronics supplies the modulated RF signal for the Bragg cell with a carrier frequency that corresponds to the multiple of the laser repetition rate.


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