MS-ROC Autocorrelator
All-rounder to characterize pulse duration of repetitive fs- and ps-pulses
The MS-ROC (Multi-Shot Row Optical AutoCorrelator) enables pulse width measurement using second order scanning autocorrelation. It is based on a Michelson interferometer and second harmonic generation (SHG autocorrelation). Different models allow pulse duration analysis down to 3 fs for ultrashort pulses and 80 ps for long pulses, even for low pulse energies in the pJ and nJ range. High scan speeds of up to 130ps/s are ideal for real-time measurements.
Yuki AshidaOptical Engineer - SCREEN - Japan
Among the autocorrelators we’ve used, MS‑ROC stands out. Setup was effortless and it delivered precise measurements right away. Femto Easy’s support is also top‑tier.
Karolis BalskusSenior Laser Engineer - Menhir Photonics - Switzerland
Menhir Photonics AG acquired a versatile Femto Easy multi-shot autocorrelator MS-ROC some time ago. This tool has been essential for accurate pulse duration measurements for multiple R&D projects. This version of the MS-ROC covers pulse durations from 50 fs to 40 ps. It is perfect for our high repetition rate, low pulse energy lasers.
Liam BarryProfessor - Dublin City University - Ireland
The Radio and Optical Communications Lab at Dublin City University acquired the MS-ROC autocorrelator to characterize optical frequency combs from 10 to 100 GHz for applications ranging from data center interconnects to THz generation. Its alignment-free operation achieved through a fibre coupled input to the autocorrelator significantly reduces the time to take our measurements compared to older autocorrelators.
Eric FackelmanResearcher - FZ Jülich - Germany
The MS-ROC has a clear design and is easy to align and measure the pulse width of the beam. The information is saved in convenient formats for further analysis. The STAR software has a clean and customizable interface, yet is packed with features. We appreciate how FemtoEasy has implemented our suggestions for improving the software. We look forward to using this equipment for characterizing and monitoring our broad range output OPA and SHG beamlines as we build and use our pump-probe laser system for photoemission orbital cinematography.
Large scan range & High resolution
Large pulse duration measurement range from 3 fs to 80 ps with highest resolution
Easy to use
Less than 2 minutes setup time, Iris aperture integrated
Low energy pulses
down to pJ level
Time-trace
Our history graph show pulse duration changes over time – perfect for unattended long-term measurements
High-resolution combined with large scan ranges
Both high resolution and large pulse duration ranges are achievable with the same instrument.
Capture details at low pulse energies
Even at low pulse energies and average laser powers, MS-ROC delivers detailed and accurate results.
Wavelength range flexibility
Easily change the wavelength range by changing optics set. Only 1 detector and 4 optics sets to cover the whole range.
Technical Specification
Femto Easy’s ROC multi-shot autocorrelator comes with a range of unique features and configuration options. From femtoseconds to picoseconds. Compare the technical specifications and discover your favorite model.
| - | MS-ROC | MS-ROC LP | MS-ROC SP | MS-ROC SLP | MS-ROC USP |
|---|---|---|---|---|---|
| Pulse duration min | 50 fs | 50 fs | 15 fs | 15 fs | 3 fs |
| Pulse duration max | 40 ps | 80 ps | 40 ps | 80 ps | 40 ps |
| Accessible spectral range (nm)1 | 480 - 2150 | 480 - 2150 | 480 - 2150 | 480 - 2150 | 480 - 2150 |
| Minimum temporal resolution | 1 fs | 1 fs | 0.25 fs | 0.5 fs | 0.25 fs |
| Maximum scan speed | 39 ps/s | 78 ps/s | 39 ps/s | 78 ps/s | 39 ps/s |
| Min input pulse energy2 | |||||
| 1 MHz | 100 MHz | 5 pJ | 0.5 pJ | 5 pJ | 0.5 pJ | 1 nJ | 100 pJ | 1 nJ | 100 pJ | 1 nJ | 100 pJ |
| Input pulse repetition rate | 100 Hz to GHz 3 | ||||
| Input polarization | linear vertical | ||||
| Detection | CMOS 12 Bits, 3 Mpx, 72 dB | ||||
| PC Interface | USB 3.1 | ||||
| Beam height (mm) | 69 - 148 | ||||
| Dimensions (mm) | 222 x 194 x 129 | ||||
2 Those values give an order of magnitude. The exact sensitivity depends on many parameters (pulse duration, beam profile, wavelength…)
3 Low repetition rate available as an option.
Optional Features
Additional crystals
The default MS-ROC configuration includes one crystal. To extend the wavelength range of the device, additional plug&play crystals can be ordered and swapped within the system in seconds
Fiber input connector
Plug play collimation module with fiber connector. Can be mounted on the MS-ROC to easily switch the input from free-space to fiber. No alignment required.
Low repetition rate
Synchronization mode to be used when the laser repetition rate is low. Recommended from below 200 kHz
Software
All key data conveniently displayed: The Femto Easy software has been designed to be user friendly and intuitive. The modern software works with touchscreens and runs 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.
Femto Easy Autocorrelator in the Lab (here: ROC single-shot model)
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Pulse duration measurement made easy
Our engineers employ the latest technologies and frameworks to create autocorrelator solutions that combine a strong easy-to-use experience with high scientific performance.