ROC | Compact Autocorrelator for Ultrafast Laser Pulse Measurement

Time to measurement

<2 min - No calibration needed

Measurement type

Single-shot and Multi-shot

Input pulse energy

from a few pJ to a few mJ

Acceptable average power

Up to 3.5 W

Pulse measurement range

5 fs to 10 ps

Interface

USB3.1 (or GigE)

A Compact Autocorrelator for Ultrafast Pulse Measurements

Autocorrelators are used to measure pulse duration. The basic principle is to create two copies of the incoming beam, with a beam splitter. Those copies are superimposed in a nonlinear medium, where they interact generating a third beam. As the overlap of the two copies depends on the pulse duration, analyzing the third beam allows to calculate the pulse duration. The ROC autocorrelator is a single-shot autocorrelator, thus it needs one single pulse to measure the duration. It is very compact and extremely easy to use. Only two minutes are necessary to get the measurement!

Femto Easy ROC: The Most Robust and Easy to Use Autocorrelator in the Market

ROC stands for Row Optical Correlator. Based on an ultra compact and robust inline setup, the ROC allows the measurement of single-shot autocorrelation traces. Specifically designed to offer the easiest user experience, they cannot be misaligned and no calibration or tweaking is needed. Also, they are easily transportable. And yes, they are rock-solid! Besides those advantages, the ROC autocorrelators provide excellent technical performances and highly accurate measurements. The ROC autocorrelators are available for different wavelength ranges and several pulse durations.

ROC features:

Ultra compact
Ultra easy to use: installation and measurement in less than 2 minutes! No calibration necessary
Suitable for any repetition rate, from fs to ps, broad wavelength range
Single-pulse extraction possible up to 150 kHz laser repetition rate (with Enhanced detection option)
User-friendly and powerful software (STAR : Software Technology for Acquisition and Retrieval)
Input pulse energy from few pJ to few mJ
Acceptable average power up to 3.5 W
Pulse measurement from 5 fs to 10 ps
Broad available spectral range

MS-ROC stands for Multi-Shot Row Optical Correlator. The MS-ROC allows the measurement of autocorrelation traces. It is based on second harmonic generation, making it reliable and compact. It has been specially developed for sources with sub-nJ energy per pulse. It allows the measurement of pulses from 50 fs to 40 ps in the standard version. With its high scan speed, real-time operations is possible for measurement and optimization. The MS-ROC-LP can perform scan at 130 ps/s, making it the fastest scanning autocorrelator on the market. Also, the MS-ROC-SP allows the measurement of both ultra-short and long pulses thanks to its dual-mode (standard mode for pulse duration > 50 fs and fine-scan mode for pulse < 50 fs). Like every products, the MS-ROC is easy to install and use.

MS-ROC features:

Ultra simple alignment (2 min to setup)
Large pulse duration measurement range (from 5 fs to 80 ps)
High sensitivity (sub-nJ pulse)
User-friendly and powerful software (STAR : Software Technology for Acquisition and retrieval)
Broad available spectral range
Fiber connector available (FC/APC, FC/PC)

Single Shot (ROC)
	FC	FS10	FS20	PS1	PS3	PS5	PS10
Pulse duration min	5 fs	20 fs	20 fs	50 fs	70 fs	100 fs	300 fs
Pulse duration max	150 fs	250 fs	500 fs	1 ps	3 ps	5 ps	10 ps
Accessible spectral range (nm)*	480 - 2100	480 - 2100	480 - 2100	480 - 2100	480 - 2100	480 - 2100	800 - 2100
Dimensions (mm)	55 x 56 x 265	55 x 56 x 265	55 x 56 x 233	55 x 56 x 195	55 x 56 x 195	55 x 56 x 195	55 x 56 x 195
Input pulse repetition rate**	Single-shot to GHz	Single-shot to GHz	Single-shot to GHz	Single-shot to GHz	Single-shot to GHz	Single-shot to GHz	Single-shot to GHz
Single-pulse measurement	Up to 40 kHz (150kHz w/ option)	Up to 40 kHz (150kHz w/ option)	Up to 40 kHz (150kHz w/ option)	Up to 40 kHz (150kHz w/ option)	Up to 40 kHz (150kHz w/ option)	Up to 40 kHz (150kHz w/ option)	Up to 40 kHz (150kHz w/ option)
Min input pulse energy @ Single-shot	1 µJ at 30 fs	1 µJ at 30 fs	1 µJ at 30 fs	1 µJ at 300 fs	1 µJ at 300 fs	1 µJ at 300 fs	1 µJ at 300 fs
Min input pulse energy @ 40 MHz	500 pJ at 30 fs	500 pJ at 30 fs	500 pJ at 30 fs	300 pJ at 300 fs	300 pJ at 300 fs	300 pJ at 300 fs	300 pJ at 300 fs
Variable ND Filter	yes	yes	yes	yes	yes	yes	yes
Iris Aperture	yes	yes	yes	yes	yes	yes	yes
Input polarization	linear horizontal or vertical	linear horizontal or vertical	linear horizontal or vertical	linear horizontal or vertical	linear horizontal or vertical	linear horizontal or vertical	linear horizontal or vertical
Detection	CMOS 12 Bits - 3 Mpx - 72 dB	CMOS 12 Bits - 3 Mpx - 72 dB	CMOS 12 Bits - 3 Mpx - 72 dB	CMOS 12 Bits - 3 Mpx - 72 dB	CMOS 12 Bits - 3 Mpx - 72 dB	CMOS 12 Bits - 3 Mpx - 72 dB	CMOS 12 Bits - 3 Mpx - 72 dB
PC Interface	USB 3.1	USB 3.1	USB 3.1	USB 3.1	USB 3.1	USB 3.1	USB 3.1
Beam height (mm)	Adjustable from 30 mm	Adjustable from 30 mm	Adjustable from 30 mm	Adjustable from 30 mm	Adjustable from 30 mm	Adjustable from 30 mm	Adjustable from 30 mm

MS-ROC (Multi-Shot)
	MS-ROC	MS-ROC-LP	MS-ROC-SP	MS-ROC-SLP
Pulse duration min	10 fs - 50 fs	20 fs	4 fs - 20 fs	4 fs - 20 fs
Pulse duration max	40 ps	80 ps	40 ps	80 ps
Fine scan mode range	N/A	N/A	4 - 100 fs	4 - 100 fs
Accessible spectral range (nm)**	480 - 2200	480 - 2200	480 - 2200	480 - 2200
Minimum temporal resolution	1 fs	2 fs	standard : 1 fs, fine scan : 50 as	standard : 2 fs, fine scan : 50 as
Scan speed	> 65 ps/s	> 130 ps/s	standard : > 130 ps/s fine scan : > 400 fs/s	standard : > 65 ps/s fine scan : > 400 fs/s
Min input pulse energy @ 1 MHz	5 pJ	5 pJ	1 nJ	1 nJ
Min input pulse energy @ 100 MHz	0.5 pJ	0.5 pJ	100 pJ	100 pJ
Input pulse repetition rate	100 Hz to GHz	100 Hz to GHz	100 Hz to GHz	100 Hz to GHz
Input polarization	linear vertical	linear vertical	linear vertical	linear vertical
Detection	CMOS 12 Bits, 3 Mpx, 72 dB	CMOS 12 Bits, 3 Mpx, 72 dB	CMOS 12 Bits, 3 Mpx, 72 dB	CMOS 12 Bits, 3 Mpx, 72 dB
PC Interface	USB 3.1	USB 3.1	USB 3.1	USB 3.1
Beam height (mm)	69 - 148	69 - 148	69 - 148	69 - 148
Dimensions (mm)	222 x 194 x 129	222 x 194 x 129	326 x 194 x 129	326 x 194 x 129

Data Sheet and Brochures

FemtoEasy Single-Shot ROC datasheet

FemtoEasy Multi-Shot ROC datasheet

Femto Easy STAR Software

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.

Enhanced detection	Replacement of the default camera embedded in the ROC by a higher performance one to increase the specifications of the system (better temporal resolution, single-shot extraction up to 150 kHz)
Fiber input connector	Plug&play collimation module with fiber connector. Can be mounted on the ROC to easily switch the input from free-space to fiber. No alignment required.
High dynamic range	Software mode to increase the dynamic of the ROC signal acquisition from 12 to 16 bits. Not compatible with pure single-shot measurement as 2 images are necessary to build one autocorrelation trace
Low energy	Internal or external module (depending on ROC model) to increase the sensitivity of the device when the laser power is too weak

Pierre Deslandes. CTO, VP and Founder – Ilasis – France

“The femtosecond pulse duration measurement solution from FemtoEasy (ROC autocorrelator) is easy to use, fast and reliable. The STAR software also establishes a new standard in terms of user friendliness and ease of use.”

Beat Jäggi. Activity Manager Service – Lasea – Switzerland

“We are using the ROC autocorrelator. The device is easy to align and perfectly suited for temporary installation in a machine, due to its compact size. In case of problems and questions, the customer support of FemtoEasy is reactive and provides good solutions.”

Valentin Maffeis. Laser process R&D Engineer – HEF – France

“Thanks to the ease of use of the single-shot ROC autocorrelator, our approach of beam characterization changed dramatically. Given the speed with which reliable results can be obtained and the robustness of the device, we now use our FemtoEasy instruments for the monitoring of several machines. The STAR software is excellent on its own right, and the API makes it simple to integrate FemtoEasy devices in our interface.”

Laurent Gallais. Professor – Institut Fresnel – France

“We use the ROC single-shot autocorrelator from FemtoEasy. This system is robust and easy to use, hence perfect for a laboratory use with multiple users.”

Description
Additional information

A Compact Autocorrelator for Ultrafast Pulse Measurements

Autocorrelators are used to measure pulse duration. The basic principle is to create two copies of the incoming beam, with a beam splitter. Those copies are superimposed in a nonlinear medium where they interact, generating a third beam. As the overlap of the two copies depends on the pulse duration, analyzing the third beam allows to calculate the pulse duration. The ROC autocorrelator is a single-shot autocorrelator, thus it needs one single pulse to measure the duration. It is very compact and extremely easy to use. Only two minutes are necessary to get the measurement!

Autocorrelator principle

Femto Easy ROC: The Most Robust and Easy to Use Autocorrelator in the Market

ROC: Row Optical Correlator.

Based on an ultra compact and robust inline setup, the ROC allows the measurement of single-shot autocorrelation traces. They are specifically designed to offer an easy user experience, cannot be misaligned and no calibration or tweaking is necessary. They are compact and durable, making them easily transportable. In addition to these advantages, the ROC autocorrelators provide excellent technical performances and highly accurate measurements. The ROC autocorrelators are available for different wavelength ranges and several pulse durations.

ROC features:

Ultra compact
Ultra easy to use: install and measure in less than two minutes! No calibration needed
Suitable for any repetition rate, from fs to ps, broad wavelength range
Single-pulse extraction possible up to 150 kHz laser repetition rate (with Enhanced detection option)
User-friendly and powerful software (STAR: Software Technology for Acquisition and Retrieval)
Input pulse energy from few pJ to few mJ
Acceptable average power up to 3.5 W
Pulse measurement from 5 fs to 10 ps
Broad available spectral range

MS-ROC: Multi-Shot Row Optical Correlator

The MS-ROC allows the measurement of autocorrelation traces. It is based on second harmonic generation, making it reliable and compact. It has been specially developed for sources with sub-nJ energy per pulse. It allows the measurement of pulses from 50 fs to 40 ps in the standard version. With its high scan speed, real-time operations is possible for measurement and optimization. The MS-ROC-LP can perform scan at 130 ps/s, making it the fastest scanning autocorrelator on the market. Also, the MS-ROC-SP allows the measurement of both ultra-short and long pulses thanks to its dual-mode (standard mode for pulse duration > 50 fs and fine-scan mode for pulse < 50 fs). Like every products, the MS-ROC is easy to install and use.

MS-ROC features:

Ultra simple alignment (2 min to setup)
Large pulse duration measurement range (from 5 fs to 80 ps)
High sensitivity (sub-nJ pulse)
User-friendly and powerful software (STAR : Software Technology for Acquisition and retrieval)
Broad available spectral range
Fiber connector available (FC/APC, FC/PC)

Visit our application page on ultrafast laser diagnostics

FemtoEasy ROC datasheet

FemtoEasy_MSROC_datasheet

Femto Easy STAR Software

The Femto Easy software is designed to be user friendly and intuitive. It is a modern software that is compatible with touchscreen that can run either under Linux or Windows. Control your devices from a distance via PC, tablet or smartphone. Custom software developments are available upon request.

Femtoeasy Star Software for ROC

Options for ROC Autocorrelator

Enhanced detection	Replace the default camera embedded in the ROC with a higher performance one to increase the specs of the system (better temporal resolution, single-shot extraction up to 150 kHz)
Fiber input connector	A plug & play collimation module with fiber connector can be mounted on the ROC to easily switch the input from free-space to fiber. No alignment needed.
High dynamic range	Increase the dynamic of the ROC signal acquisition from 12 to 16 bits with a software mode. Not compatible with pure single-shot measurement as two images are needed to build one autocorrelation trace.
Low energy	Internal or external module (depending on ROC model) increases the sensitivity of the device when laser power is too weak
Phase matching	Default ROC configuration works for a given central wavelength. Phase matching allows tuning the SHG crystal to measure different central wavelengths with the best SNR.
Small beam	Internal or external module (depending on ROC model) to increase the input beam diameter when it is too small (necessary for beams typically in the range of few mm or less)
Trigger	Synchronization of the ROC detection to an external signal for accurate laser single pulse extraction up to 80 kHz (150 kHz with the Enhanced detection option)

Visit the manufacturer’s website here: https://www.femtoeasy.eu/autocorrelator/roc-autocorrelator-single-shot/

Text0	Measures pulses from 5 fs to 10 ps
Text1	Ultra compact and alignment free
Text2	No moving parts and insensitive to vibrations
Text3	Single-pulse extraction up to 100 kHz
Text4	USB powered
Text5	User-friendly software

ROC | Compact Autocorrelator for Ultrafast Laser Pulse Measurement

A Compact Autocorrelator for Ultrafast Pulse Measurements

Femto Easy ROC: The Most Robust and Easy to Use Autocorrelator in the Market

ROC features:

MS-ROC features:

Femto Easy STAR Software

Pierre Deslandes. CTO, VP and Founder – Ilasis – France

Beat Jäggi. Activity Manager Service – Lasea – Switzerland

Valentin Maffeis. Laser process R&D Engineer – HEF – France

Laurent Gallais. Professor – Institut Fresnel – France

A Compact Autocorrelator for Ultrafast Pulse Measurements

Femto Easy ROC: The Most Robust and Easy to Use Autocorrelator in the Market

ROC: Row Optical Correlator.

ROC features:

MS-ROC: Multi-Shot Row Optical Correlator

MS-ROC features:

Femto Easy STAR Software

Options for ROC Autocorrelator

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FROG Systems | Ultrafast Laser Characterization

micro-ROC | World’s Smallest Single-Shot Autocorrelator

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