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ROC Autocorrelator

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ROC stands for Row Optical Correlator.
The ROC autocorrelators are ultra compact and robust single shot autocorrelators. As the name implies, they are designed specifically to be ultra easy to use and to align onto the laser beam. They cannot be misaligned, there is no need for calibration or tweaking and they are easily transportable. And yes, they are rock-solid!
Besides those advantages, the ROCs autocorrelators provide excellent technical performances and highly accurate measurements.
The ROCs autocorrelators are available for several wavelength and several pulse duration.

Specifications

  • Extreme ease of use
  • High level of accuracy
  • Only 2 minutes to install and start measuring!
  • No calibration necessary
  • Down to 5 femtoseconds
  • Single shot measurements up to 80 kHz
  • Broad spectral range (450-2000 nm for the broadband model)
  • Ultra compact: 50x50x250mm for short pulse model, 50x50x180mmm for long pulse model

Software interface

The Femto Easy software has been designed to be user friendly and intuitive. This is a modern software compatible with touchscreen that can run either under Linux or Windows. It allows distant control of the devices via PC, tablet or smartphone. We can also provide custom software developments upon request.
The image is a screenshot of the ROC software interface.

Measurement of few cycle pulses

Few cycle pulse measurement example
This is an autocorrelation measurement sample of ultrashort pulse that has been performed in Politecnico di Milano with our short pulse model autocorrelator ROC FC-700.
On the top, the raw image of the spatially resolved autocorrelation trace.
At the bottom, the analysed autocorrelation trace integrated over the spatial coordinate. The experimental data (in red) are fitted by a Gaussian function (in blue). The full width at half maximum of the autocorrelation trace is 8.3 fs. The corresponding Gaussian pulse duration is 5.9 fs.

Measurement of low energy pulses

Low energy pulse measurement example
This measurement has been performed on a femtosecond Ti:Sapph oscillator at LCAR with a ROC FC-400 autocorrelator.
The average power used for the measurement was with only 20 mW at 62 MHz repetition rate. It means that in this conditions 0.3 nJ per pulse was enough to get a clean measurement. At the buttom, the raw image of the spatially resolved autocorrelation trace.
On the top, the analysed autocorrelation trace integrated over the spatial coordinate. The experimental data (in blue) are fitted by a Gaussian function (in red). The full width at half maximum of the autocorrelation trace is 30.4 fs for a Gaussian pulse duration of 21.5 fs.

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