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TOPAG Lasertechnik GmbH
Nieder-Ramstädter Str. 247
64285 Darmstadt
Telefon: +49 6151 4259 78
Telefax: +49 6151 4259 88 
E- mail: info [at] topag.de 

Autocorrelator AA-20DD

504
Femtosecond Scanning Autocorrelator AA-20DD

AA-20DD Scanning Autocorrelator

This compact and versatile autocorrelator is designed for measurement of pulse duration of femto- and picosecond oscillators. The autocorrelator can cover several wavelength ranges by using up to 3 interchangeable photodetectors and optics. It is based on two-photon conductivity in semiconductor. The device features USB interface and can be easily hooked up to a PC with Windows OS, LabView drivers are also included.

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  • Desrcription
  • Specifications
  • Pictures
Tab 1

Features:

  • Pulse duration range 10-30000 fs
  • Scanning rate 0.1-20 Hz
  • Linear distortion <1%
  • USB connection and software
  • All-reflective optics
  • Position measurement
  • Fringe-resolved autocorrelation function)
  • Frictionless movement
  • Optional fiber input

Application:

  • Femtosecond oscillator pulse duration measurement
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 20fs to 6ps 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.
Tab 2
  AA-20DD
Wavelength range, nm 450-700 (AA-20DDV)
700-1300 (AA-20DD)
1300-2000 (AA-20DDR)
450-2000* (AA-20DD+R+V)
Pulse duration range, fs 20-6000** (default); 
20-30000** (-30PS option)
Input repetition rate >10 kHz (default); 
>10 Hz (-S option)
Sensitivity 100 mW2
Input polarization, linear horizontal (vertical upon request)
Scanning rate, Hz 0.1-20
Linear distortion, % <1%
Collinear (interferometric and intensity) autocorrelation yes
PC connection USB
Necessary equipment PC with Windows OS or oscilloscope
Fiber input (optional) FC/PC or FC/APC (other types available upon request)
Signal source and detector Two-photon conductivity in semiconductor
Dimensions, mm 132x129x117 (optical unit)
225x190x45 (electronic unit)

* - the AA-20DD may cover either one range of customer's choice, two separate ranges (i.e. 450-1300 or 700-2000) or all three ranges (450-2000 nm) with interchangeable optics and photodetectors (1, 2 or 3 sets included respectively).
** - pulse duration range from 10 fs is available upon request.

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AA-20DD Product 
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AA-20DD 
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AA-20DD dimensions 
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AA-20DD dimensions 
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A-20DD Spektrum 
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AA-20DD acquisition software Irtac 
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