Compact Size Autocorrelator for Routine Tasks

Mini is the perfect combination of tuning-free autocorrelation measurement, compact size and high sensitivity.

Compact Design

With its compact footprint of only 160 x 220 x 155 mm, the Mini autocorrelator is perfect for working environments where space is limited. When it is needed elsewhere, simply place this portable unit in the lightweight aluminum case provided, for easy and safe transportation to the next site.

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.

Tuning-Free Wavelength Matching with Mini TPA

Conventionally, autocorrelators used to split an optical pulse into two replicas and recombine them for the Second Harmonic Generation (SHG) in a nonlinear crystal. The APE Mini TPA instead benefits from the two photon absorption principle. This eliminates the need of SHG crystal angle tuning and makes the wavelength tuning process unnecessary.

Switching Between Collinear and Non-Collinear Mode with Mini PD

The Mini PD supports quick and easy switching between collinear and non-collinear measurement modes. While collinear mode provides pulse width measurement with additional qualitative information about the chirp, non-collinear mode gives background-free autocorrelation with a high dynamic range.

UV Range without Cross-Correlation

Together with an UV Optics Set, the Mini TPA provides simple pulse width measurement in the UV range, from 250 nm to 400 nm — without the need for cross-correlation. Elimination of the cross-correlation approach also makes the data evaluation easier, by cutting the conventional two-step process to a single-step solution.

UV at 250 nm to IR at 3200 nm

APE provides a selection of exchangeable Optics Sets, ranging from UV at 250 nm to IR at 3200 nm, for sensitive measurements across an extremely broad wavelength region. Due to its compact footprint, the Mini TPA is also the perfect answer to your space-saving and easy portability requirements.


At a Glance

Mini Autocorrelator SpecificationMini TPA Mini PD
* Measured sensitivity including Optics Set, defined as average power times peak power of the incident pulses PAV * Ppeak
Measurable Pulse Width Range50 fs … 3.5 ps;
Optional: down to 35 fs
50 fs … 3.5 ps;
Optional: down to 10 fs
Available Optics SetsExchangable Optics sets of TPA-typeFixed Optics set of PD-type - not exchangable
Wavelength RangeUV 250 … 400 nm;
VIS 1 400 … 700 nm;
NIR 700 … 1250 nm;
IR 1250 … 2100 nm;
Ext. IR 2000 … 3200 nm
VIS 1 420 … 550 nm;
VIS 2 540 … 750 nm;
NIR 700 … 1200 nm;
IR 1100 … 1800 nm
(Fixed range to be specified on order)
ModeCollinear intensityNon-collinear intensity, collinear interferometric
Sensitivity*Depending on Optics set,
typically 0.1 W2;
UV range < 500 W2
Depending on Optics set,
typically 1 W2
SHG Tuning for Phase MatchingNot requiredSoftware aided
Max Input Power0.3 W or 5 µJ (whichever results in lower value)0.5 W (e.g. oscillator with a rep. rate of approx. 70 MHz) or 5 µJ (e.g. amplifed
Repetition Rate> 300 Hz;
For UV only: upper limit 2 MHz
> 300 Hz
Trigger Mode
300 Hz … 50 kHz
Delay Resolution
< 0.001% of scan range
Delay Linearity
Input Aperture
6 mm (free-space)
Input Beam Coupling
Free-space; Optional: fiber coupling FC/PC, FC/APC
Input Polarization
Linear horizontal, vertical available as option
Beam Input Height
86 … 150 mm; Optional 50 mm
Included; Real-time display of pulse width and central wavelength, different fitting routines
Fitting Routine
Gaussian, Sech2, Lorentz
Remote Control
Possible via TCP/IP (SCPI command set)
NIST traceable calibration certificate included
  • Variety of Optics sets for spectral coverage from 340 nm to 3200 nm
  • UV measurement without cross-correlation with Mini TPA
  • Short-pulse measurements down to 10 fs with Mini PD
  • Compact design for minimum space requirements and maximum portability
  • Ultra-precise delay resolution
  • Gaussian, Sech2, and Lorentzian fitting routines
  • Including software and USB interface
  • TCP/IP remote control with standardized command set for easy programming
  • NIST traceable calibration
  • Aluminium carrying case

Datasheets & Brochures

APE Mini Rev. 4.1.2. (pdf / english)

Step Files (.stp)

APE-Mini-Stepfile-20150921 (.stp 3D CAD model with overall dimensions)

TCP/IP Sample Code for Remote Control

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More is More

Working with the pulseLink Controller (applicable to Mini TPA, Mini PD, pulseCheck)

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.