Femto Easy, ultrafast instrumentation

µ-ROC Autocorrelator

ROC stands for Row Optical Correlator. Based on an ultra compact and robust inline setup, the μ-ROC takes the ROC concepts to its limit for the measurement of single-shot autocorrelation traces in the smallest housing footprint ever. Based on the most advanced innovation from Femto Easy, leveraging several years of experience in the single-shot ultrafast instrumentation, the μ-ROC is specifically designed for OEM direct integration into laser heads or laser systems.


  • Ultra compact, and alignment free, can be used as a simple camera
  • Robust design, no moving parts. Non sensitive to vibrations
  • Directly powered by the USB cable, no power supply required
  • Suitable for any repetition rate. Single-pulse extraction possible up to 100 kHz laser repetition rate
  • User-friendly and powerful software. REST API for standard software integration using simple HTTP requests


µ-ROC models Ti:Sa Yb Yb-s
Pulse duration range (fs) min 20 - 501 50 - 1501 25 - 501
max 500 1500 1000
Accessible spectral range (nm) 700 - 900 1020 - 1080
Input pulse repetition rate any
Single-pulse measurement up to 100 kHz laser repetition rate (with Trigger option, 50 kHz without)
Min input pulse energy2 Single-shot 25 µJ 5 µJ
1 MHz 100 nJ 5 nJ
100 MHz 5 nJ 0.1 nJ
Input polarization linear horizontal or vertical
Detection CMOS 12 Bits
PC Interface USB 3.1
Beam height (mm) 20
Dimensions (mm) 30 x 40 x 45

1 The two minimum pulse duration values correspond to the Fourier limited pulse duration with and without GDD precompensation

2 Those values give an order of magnitude. The exact sensitivity depends on many parameters (pulse duration, beam profile, wavelength…)


Option Description
Trigger Synchronization of the µ-ROC detection to an external signal for accurate laser single pulse extraction up to 100 kHz
Enhanced detection Replacement of the default camera embedded in the µ-ROC by a higher performance one to increase the temporal resolution


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 µ-ROC software interface.