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Optcal Delay Line Mirror Mount

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Optcal Delay Line Mirror Mount

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This application-note is meant to quickly walk you through the process of “how to” align New Focus’ latest delay-line mount in 7 steps. You will see that the delay-line mount has advantages over using two independent mirror mounts. The delay line mount will help to reduce alignment time and to get your experimental results more quickly.An optical delay line is the common choice for all applications where the delay in the time domain between 2 or more light-pulses needs to be varied by increments in the femtosecond to nanosecond regime. The difference in path length between 2 beams divided by the speed of light gives the actual time delay. E.g. a difference in path length of 1um equals a time delay of 3.3 fs. (1 um) / (3x10^8 m/s). Note that a movement of the delay stage results in twice the total path length, e.g. 1µm movement of the stage corresponds to 6.6 fs.

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