The AA-20DD real-time autocorrelator offers smooth and fast measurement of femtosecond and picosecond pulse duration. The autocorrelator can cover several wavelength ranges by using up to 3 interchangeable photodetectors and optics. Two separate ranges can also be covered upon request. Input pulse duration ranges from 20 fs to 6 ps for easy monitoring of different laser systems, especially femtosecond and picosecond oscillators (for amplifier monitoring please also see our ASF-20 single-shot autocorrelator).

The device features USB interface and can be easily hooked up to a PC with Windows OS, LabView drivers are also included in the package. The software is supplied with the device and comprises several useful tools. The acquired pulse duration data can be visualized, stored or exported to a .txt or .dat file. Autocorrelation function and final FWHM pulse duration in femtoseconds are calculated and displayed in real-time. Moreover, Gaussian or sech² fitting options are enabled, intensity function may also be observed. The statistical viewer feature allows the comparison of data acquired from several separate pulse measurements.

The tiny body of the AA-20DD flawlessly fits any experimental setup with strict space requirements. We also offer an optional fiber input for fast and reliable pulse duration measurement in various optical fibers. Moreover, the autocorrelator in this case still maintians the free-space measurement capability.

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