AA-DD. Scanning Real-Time Autocorrelator

Scanning real-time autocorrelators with fast delay line facilitate pulse duration measurement of various ultrafast laser oscillators and high-repetition-rate amplifiers.
  AA-20DD AA-20DD-12PS AA-20DD-30PS
Possible full wavelength range* 450-3200 nm
(exchangeable photodetector/beam splitter pairs)
V: 450-700 nm
R1: 700-1300 nm
R2: 1300-2000  nm
R3: 1950-3200 nm
Input pulse duration range 20 fs - 6 ps 20** fs - 12 ps 20** fs - 30 ps
Input pulse repetition rate >10 kHz >1 kHz >10 Hz (with a strobe-integrator)
Sensitivity (typical) 100 mW2
Input polarization linear, horizontal (vertical upon request)
Scan rate 0.1-20 Hz
Linear distortion <1%
Collinear autocorrelation yes (interferometric and intentsity)
PC connection USB
Required equipment Windows PC or oscilloscope
Fiber input (optional) FC/PC or FC/APC (other types on request)
Signal source and detector type two-photon conductivity in semiconductors
Dimensions, mm 132x129x117 - optical unit
225x190x45 - control unit
185x180x145 - optical unit
225x190x45 - control unit
185x180x145 - optical unit
225x190x45 - control unit
* - the indicated subranges are covered by exchangeable photodetector/beam splitter pairs. I.e. the customer may choose from one subrange of their choice (to cover a desired corresponding wavelength region indicated in the table above) to four sets for complete full wavelength range coverage. Please indicate the required subranges for precise quotation and information when making a request for the product;
** - pulse duration from 10 fs is possible upon request.

The AA-DD 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 low repetition rate amplifier monitoring <10 kHz please also see our ASF single-shot autocorrelator series).

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 available, 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-DD 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 maintains the free-space measurement capability.

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