pulseCheck Autocorrelators Cover the Broadest Range of Wavelengths and Pulse Widths

NIST Traceable Calibration

Laboratories and manufacturers are often faced with systematically establishing an unbroken chain of calibrations to specified references. All APE autocorrelator models are calibrated to a traceable standard in accordance with NIST (U.S. National Institute of Standards and Technology) measurement traceability specifications. A printed and signed calibration certificate is provided with each pulseCheck.

UV at 200 nm to IR at 12 µm

APE provides a selection of exchangeable Optics Sets, ranging from UV at 200 nm to IR at 12 µm, for sensitive measurements across an extremely broad wavelength region.

From < 10 fs up to 400 ps

The various pulseCheck configurations can be optimized accordingly to suit your individual pulse width measurement needs. Extra-long pulse durations are accessible with pulseCheck SM, which utilizes fast and highly precise stepping motor technology to measure long pulses across a larger scan range.

FROG Option for pulseCheck

Most of the pulseCheck autocorrelators by APE optionally integrate FROG and give access to complete pulse characterization. FROG enables  pulseCheck to measure the spectral and temporal bandwidth and phase with just a few adjustments to the autocorrelator.

Three Types of Detectors: PMT, TPA, PD

The three detector types address the need for low noise and enhanced sensitivity in different applications. For pulse measurement with extreme sensitivity and low pulse energy, we recommend our photomultiplier (PMT) detector. Spectrally enhanced photodiodes (PD, TPA), on the other hand, are the ideal choice for measurements requiring sensitivities of a few mW2.


At a Glance

* Measured sensitivity including Optics Set, defined as average power times peak power of the incident pulses PAV * Ppeak
Measurable Pulse Width RangeDepending on Base Unit:

< 10 fs ... 3.5 ps
< 10 fs ... 12 ps
< 50 fs ...35 ps
< 120 fs ... 60 ps
< 120 fs ... 150 ps
< 120 fs ... 300 ps
< 120 fs ... 400 ps
Wavelength Range200 nm - 12 µm, depends on Optics Set
Optics SetsExchangeable
Detector (Optics Sets)PMT, PD, or TPA
Delay Resolution< 0.001 % of scan range
Delay Linearity< 1 %
SensitivityTypically 1 ... 10-6 W2 depending on Optics Set*
Recommended Repetition RatePD, TPA: 10 Hz and above; PMT: 250 kHz and above
Type of Measurement ModePMT, PD : non-collinear intensity, collinear interferometric;
TPA: hybrid collinear intensity
Mode SwitchingAvailable for PMT, PD
SHG Tuning for Phase MatchingPMT/PD: automatic; TPA: not applicable
Trigger ModeTTL, f < 50 kHz; pulseCheck SM < 1 kHz
Input PolarizationLinear horizontal, vertical available as option
Input Beam CouplingFree-space; Option: fiber coupling FC/PC, FC/APC, SMA
Max Input Power1 W (e.g. oscillator with a rep. rate of approx. 70 MHz) or 10 μJ (e.g. amplified system with rep. rates in the kHz range), whichever results in lower value
Input Aperture6 mm (free-space)
SoftwareIncluded; Real-time display of pulse width and central wavelength, different fitting routines
Fitting RoutineGaussian, Sech2, Lorentz
Remote ControlPossible via TCP/IP (SCPI command set)
CalibrationNIST traceable calibration certificate included
  • Exchangeable Optics Sets for broadest spectrum coverage from 200 nm to 12 µm
  • Pulse widths from as low as < 10 fs all the way up to 400 ps
  • Ultra-precise delay resolution
  • Toggle between interferometric and intensity autocorrelation
  • Wide range of sensitivity levels covered with PMT, PD, and TPA
  • Automatic phase matching
  • Gaussian, Sech2, and Lorentzian fitting routines
  • Ready to use software and USB interface
  • TCP/IP remote control with standardized command set for easy programming
  • NIST traceable calibration

Datasheets & Brochures

 Step Files (.stp)

APE-pulseCheck-step-files-20140124 (.stp 3D CAD model with overall dimensions)

Contact Us


Email & Phone Contacts

APE has distributors around the world to give you the best support. Choose a country to find your local sales contact:

APE Angewandte Physik & Elektronik GmbH
Plauener Strasse 163-165 | Haus N
13053 Berlin, Germany

Tel +49 30 98601130
Fax +49 30 986011333


Coherent Scientific pty. Ltd.
Hilton SA 5033, South Australia

Phone: +61 8 8150 5200

Pinnacle Scientific Cooperation
Hangzhou, Jianggan District
China 310020

Phone +86 571 88225151

PulsePower Technology Ltd.
Beijing, Haidan District
China 100090

Phone +86 10 62565117

199 00 Praha 9, Česko

phone +420 212 247 293

Gammadata Instrument AB
750 02 Uppsala

Tel: +46 18 56 68 35

F 92170 Vanves, France

Tel: +33 1 419 061 80

Laser Sciences Services Pvt. Ltd.

Tel: +91 2778 1673

Photonic Solutions PLC
Edinburgh, UK

Tel: +44 131 664 8122

Ammo Engineering Ltd.
Petach Tikva 49517, Israel

Tel: +972 3 9239 666

Optoprim Srl.
20052 Monza, Italy

phone +39 (039) 834977

Phototechnica Corporation
Saitama 336-0017, Japan

Tel: +81 48 871 0067

Seoul 137-862, Korea

Tel: +82 2 3461 1103

Mexico City 03100, Mexico

Tel: 52(55) 5575-0312/0269/9929

Eurotek International
02-668 Warsaw, Poland

Tel: +48 2284 379 40

Innova Scientific S.L.
28290 Las Rozas de Madrid, Espana

Tel: +34 91 7105650

AceXon Technologies Pte. Ltd.
Singapore 658065

Tel: +65 (6565) 7300

Innova Scientific S.L.
28290 Las Rozas de Madrid

Tel: +34 91 7105650

Dyneos AG
CH-8307 Effretikon

Tel: +41 52 355 12 40

SuperbIN Company Ltd.
Taipei 11493
Taiwan, R.O.C.

Tel: +886 2 265 706 78

Photonic Solutions PLC

Tel: +44 131 664 8122

APE Applied Physics & Electronics, Inc.
45401 Research Ave., Suite 141
Fremont, CA 94539, USA

Tel: +1(888) 690-3250

Rita – Working with pulseCheck

Working with pulseCheck: Basics

Working with pulseCheck: Advanced

Working with the pulseLink Controller

More is More

Collinear and Non-Collinear Measurements

pulseCheck allows for fast switching between collinear and non-collinear measurement modes. Collinear, often referred to as interferometric or fringe-resolved mode, provides additional qualitative information about the chirp and central wavelength of the pulse. In contrast, noncollinear mode, also known as intensity autocorrelation, provides a background-free autocorrelation with a high dynamic range. A „hybrid“ of these two modes, collinear intensity autocorrelation, is realized with the TPA Optics Sets for the pulseCheck.

Automatic Phase Matching

Phase-sensitive, nonlinear processes require phase matching for highly efficient Second Harmonic Generation. pulseCheck achieves this fully automatically for any wavelength range, resulting in precise and fast operation with no manual adjustment needed. Because they perform the task of both detector and nonlinear optics, the TPA detectors provides tuning-free operation over a wide wavelength range.

Acquisition Software and TCP/IP Standard Software Interface

All models come with an easy to use data acquisition software, allowing for real-time data display. Furthermore, the TCP/IP-based standard software interface by APE makes it straight forward to set up remote control. This allows you, for example, to design your own automated measurement routines. Simply use our protocol templates for rapid configuration with familiar programming languages, including C++, C#, LabVIEW, Python, Matlab, and Ruby.

Our Autocorrelators at a Glance

A pulseCheck with FROG Option? A Mini? PMT, TPA, or PD Detector? Discover Our Autocorrelator Family.