Ultra-high Contrast Third-order Autocorrelator

Ultra-high Contrast Third-order Autocorrelator TUNDRA
Measurement Ultra-high Contrast Third-order Autocorrelator TUNDRA

Our third-order autocorrelator serves as a highly sensitive diagnostic tool for laser pulse contrast measurements. After further development, the dynamic range reaches up to 14 orders of magnitude, enough to characterize background or trace tiniest preand post-pulse replica of the most powerful lasers in the world. The autocorrelator generates the third harmonic signal in nonlinear crystals and is set up with all-reflective components, guaranteeing correlation traces without measurement artefacts. It can be employed in a wide range of applications. In particular, high-field experiments in plasma physics require the in-depth measurement of the pulse contrast behavior and possible parasitic pulse structures. Compared to second-order autocorrelators, the signal’s third-harmonic nature allows to distinguish between pre- and post-pulses. All these features make our specialized fully automatized autocorrelator an invaluable tool for state-of-the-art characterization of ultrashort laser pulse contrast.


  • Up to 14 orders of magnitude dynamic range with 1-3 mJ input pulses with 800 nm and 1030 nm, and customizable in a wide range.
  • No ghost pulse artefacts
  • Up to 3.8 ns scan range
  • Customizable time zero positon
  • Input pulse durations from <20 fs to 3 ps
  • Available wavelengths: 800 nm, 1030 nm, others upon request
  • Easy to setup and align
  • Full user-friendly sofware package
Tundra 4 ns contrast measurements at 1030 nm featuring a 3850 ps delay range, here shifted to negative delays to maximize information about pre-pulses.

Tundra 4 ns contrast measurements at 1030 nm featuring a 3850 ps delay range, here shifted to negative delays to maximize information about pre-pulses. Top: 200 fs, 100 kHz, 200 W high-power amplifier at LEX (Garching, Germany). Bottom: 1.5 ps, 3 kHz pump laser at MPQ (Garching, Germany).

Reference Measurements:

Tundra autocorrelators have been used sucessfully to characterize some of the most powerful and unique Terawatt or Petawatt and high-power laser systems in the world, including


  1. R. Budriūnas, T. Stanislauskas, J. Adamonis, A. Aleknavičius, G. Veitas, D. Gadonas, S. Balickas, A. Michailovas, A. Varanavičius, 53 W average power CEP-stabilized OPCPA system delivering 5.5 TW few cycle pulses at 1 kHz repetition rate, Opt. Expr. 2017, 25, 284225.
  2. J. M. Mikhailova, A. Buck, A. Borot, K. Schmid, C. Sears, G. D. Tsakiris, F. Krausz, L. Veisz, Ultra-high-contrast few-cycle pulses for multipetawatt-class laser technology, Opt. Lett. 2011, 36, 3145.
  3. D. Herrmann, L. Veisz, R. Tautz, F. Tavella, K. Schmid, V. Pervak, F. Krausz, Generation of sub-three-cycle, 16 TW light pulses by using noncollinear optical parametric chirped-pulse amplification, Opt. Lett. 2009, 34, 2459.
  4. F. Tavella, K. Schmid, N. Ishii, A. Marcinkevičius, L. Veisz, F. Krausz, High-dynamic range pulse-contrast measurements of a broadband optical parameteric chirped-pulse amplifier, Appl. Phys. B 2005, 81, 753.