Multi-shot FROG
Multi-shot Frequency-resolved Optical Gating
The MS-FROG expands our FROG series and is preferably used when it comes to pulse energies in the pJ-nJ range or when particularly large pulse duration ranges need to be covered. e.g. 4 fs to 80 ps. The MS-FROG-SP measures both fs-ultrashort and long ps-pulses thanks to its resolution of 50 attoseconds in fine-scan mode. Our MS-FROG integrates in-house built spectrometers specifically developed for FROG measurements and guarantee high spectral resolution and the best performances for pulse characterization.
Easy to use
no calibration and no tweaking necessary
pJ/nJ energy pulses
for laser sources with very low pulse energy in the pJ and nJ range
Up to 50 attoseconds resolution
with fine scan mode, you combine extreme resolutions with large scan ranges
accurate results on fs-ultra-short pulses and ps-pulses
Proprietary hot-swap spectrometers
tailored to specific requirements (not limited by 3rd-party models), easily swappable for different wavelength ranges
Maximilian BradlerTechnology Manager - Menlo Systems - Germany
The Femto Easy MS-FROG is a reliable and easy usable tool to characterize our high repetition rate (250 MHz) femtosecond pulses at 1550 nm. The fiber coupling ensures a straightforward measurement and the software allows a fast retrieval of the pulse duration and spectral phase. We mainly use it during our laser production. Also great thanks for the fast and helpful communication and support.
Patrick Bowen MontagueR&D Manager - NKT Photonics - Denmark
Femto Easy’s MS-FROGs are the most versatile tools available on the market. For our research purposes, the ability to cover broad bandwidth ranges with both fs and ps duration pulses made them ideal. The Femto Easy team also provides fast support and training on the equipment, which experienced FROG users will understand is crucial. The software produces accurate retrievals even in complex or low signal environments.
Yeong Gyu KimPrincipal Researcher - Korea Institute of Machinery and Materials (KIMM) - South Korea
We have been using our MS-FROG with great satisfaction. Compared to other FROG systems we’ve worked with, the Femto Easy system demonstrates significantly better contrast and exceptional spectral performance. It has been immensely helpful in accurately characterizing our 2 nm bandwidth ultrafast laser. Based on this, we plan to utilize your system as a reference tool to monitor the long-term pulse shape stability of our laser.
Nathalie VermeulenProfessor - Vrije Universiteit Brussel - Belgium
As a customer of Femto Easy, I really appreciate the wavelength flexibility of their MS-FROG systems so that measurements can be performed in different wavelength domains using a single system. Special efforts were made to find the best solution for my needs and to optimize the system’s performance. The FROG software is very advanced and allows a detailed analysis of the measurement data. Finally, I also really value the fast response I receive from Femto Easy customer support in case of questions.
MS-FROG: The pulse explorer
The MS-FROG is unquestionably one of Femto Easy’s most versatile tool. The in-house designed high-resolution spectrometer ensure results with unprecedented scientific accuracy.
From 4 fs to 80 ps
Short femtosecond pulse measurements combined with long picosecond ranges: MS-FROG from Femto Easy makes it now happen.
Further Key Features
- Broad available spectral range (500 – 2100 nm)
- Spectral Window Δλ from 200 – 700 nm
- Versatile: instant-swap of spectrometer for different wavelength ranges
- Sub-5 fs can be measured
- Fiber connector available (FC/APC, FC/PC)
Technical Specification
Femto Easy’s Fast FROG comes with a user-friendly and powerful software at no additional costs. Compare the technical specifications and discover your favorite model.
| MS-FROG | MS-FROG-SP | MS-FROG-LP | MS-FROG-SLP | |
|---|---|---|---|---|
| Pulse duration min | 10 fs1 - 50 fs | 4 fs1 - 20 fs | 20 fs | 4 fs1 - 20 fs |
| Pulse duration max | 40 ps | 40 ps | 80 ps | 80 ps |
| Fine scan mode range | not applicable | 4 - 100 fs | not applicable | 4 - 100 fs |
| Accessible spectral range (nm) | 500 - 21002 | |||
| Spectral Window Δλ (nm) | From 200 to 7002 | |||
| Minimum temporal resolution | 1 fs | standard: 1 fs fine scan: 50 as | 2 fs | standard: 2 fs fine scan: 50 as |
| Scan speed | > 65 ps/s | standard : > 65 ps/s fine scan: > 400 fs/s | > 130 ps/s | standard: > 130 ps/s fine scan: > 400 fs/s |
| Input pulse repetition rate | 100 Hz to GHz3 | |||
| Min input pulse energy4 | ||||
| 1 MHz | 50 pJ | 10 nJ | 50 pJ | 10 nJ |
| 100 MHz | 5 pJ | 1 nJ | 5 pJ | 1 nJ |
| Input polarization | linear vertical | |||
| Detection | CMOS 12 Bits - 3 Mpx - 72 dB | |||
| PC Interface | USB 3.1 | |||
| Beam height (mm) | 69 - 148 | |||
| Dimensions (mm) | 326 x 194 x 129 | |||
2 Effective spectral bandwidth to be defined within the accessible spectral range according to customer’s requirements. Additional spectrometers can be provided to address different spectral windows.
3 Low repetition rate available as an option
4 Values give an order of magnitude. The exact sensitivity depends on many parameters (pulse duration, beam profile, wavelength...)
Optional Features
Additional crystals
The default MS-FROG 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
Additional MISS spectrometer
The default MS-FROG configuration includes one imaging spectrometer MISS. To extend the wavelength range of the device, additional plug&play MISS spectrometers 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-FROG to easily switch the input from free-space to fiber. No alignment required.
Low energy
Optimization of the sensitivity of the MS-FROG when the laser power is too weak
Low repetition rate
Synchronization mode to be used when the laser repetition rate is low. Recommended from below 200 kHz
Phase matching
Default MS-FROG configuration works for a given central wavelength. Phase matching allows tuning the SHG crystal to measure different central wavelengths with the best SNR
Few cycle extension
Extension of the minimum pulse duration to the few cycle pulses range. Down to 10 fs for MS-FROG and down to 4 fs for MS-FROG-SP and MS-FROG-SLP
Software: FROG Acquisition and Retrieval with STAR
The retrieval of the ultrashort-pulse from the FROG trace image is managed by our easy-to-use FROG software. Fast FROG software comes with an optimized retrieval algorithm and allows you to retrieve time and spectral information in real-time.
Several algorithms (including the so called Ptychographic Iterative Engine) are combined to enhance the reconstruction speed and quality.
Thanks to speed, the live extraction of shot-to-shot pulse properties are achieved, such as temporal profile intensity and phase, fundamental spectrum and phase, pulse chirp, third-order dispersion, and, of course, pulse duration (FWHM, autocorrelation FWHM, Fourier-limited pulse duration).
FROG in the Lab
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FROG made easy
Our engineers employ the latest technologies and frameworks to create FROG solutions that combine a strong easy-to-use experience with high scientific performance. Note: The video shows our Single-shot FROG system, however, the operation of the MS-FROG is similar to the Single-Shot FROG.