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Synchronization of Two Spectra-Physics Spitfire® Pro Amplifiers for Pump-Probe Experiments

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Synchronization of Two Spectra-Physics Spitfire® Pro Amplifiers for Pump-Probe Experiments

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The invention of nanosecond pulsed lasers utilizing the Q-switch principle marked the advent of time-resolved spectroscopy1 . Over the past four decades, the pulse duration has been reduced from nanosecond to attosecond regimes thanks to breakthroughs in technology and physics2-4. In this type of spectroscopy, the delays between pulses serve as controllable variables used to test and investigate the principles of physical science. “Delay lines” which introduce time separation by introducing displacements between pulses are therefore essential and critical to the success of time resolved experiments. For example, in state-of-the-art attosecond spectroscopy5 , piezo-stages with resolutions of tens of nanometers are used; from femto to nanoseconds regimes, high-precision mechanical stages having resolutions of sub-micrometers are usually employed. From micro to milliseconds, electronic triggering and synchronization takes over to control the delay of the pulses.

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