Light Field Synthesizer


We present the first commercial Light Field Synthesizer enabling synthesis and sub-femtosecond control of super-octave light transients.

Capella is based on spectral division of a coherent supercontinuum into three different bands (channels) by chirped dichroic beamsplitters [1]. Using an interferometric spatio-temporal superposition a field waveform can be controlled and synthesized. All constituent pulses from the channels of CAPELLA are temporally compressed by chirped mirrors down to pulse duration of <10 fs. Introducing different time-delays among the channels enables the shaping and sub-cycle control of the field waveform [2].

Due to its solidness, compactness and excellent thermal capabilities, CAPELLA can maintain the optical pathlength stable among the different channels for many hours. Furthermore, an extra active-controlled loop improves the interferometric stability to <50 mrad. Apart from the generation of waveforms, CAPELLA offers the shortest pulses available in market to date.

Key Product Features

  • Shortest pulse available: 2 fs FWHM
  • Overall transmission
    • > 60% @ 9 mm beam
    • > 70% @ 7 mm beam
  • Parallel pulse compression of multiple channels:
    • < 9 fs (700 – 1000 nm)
    • < 8 fs (500 – 700 nm)
    • < 10 fs (400 – 500 nm)
  • Attosecond-scale delay among the channels
  • Interferometric stability
    • Short term passive stability: < 100 mrad
    • Long term active-loop stability: < 50 mrad
  • Incident polarization: s and p polarization
  • Laptop and user-friendly software interface included
  • Small Footprint: 30 x 20 cm²


[1] Synthesized Light Transients
A. Wirth, M. Hassan, I. Grguras, J. Gagnon, A. Moulet, T. Luu, S. Pabst, R. Santra, Z. Alahmed, A. Azzeer, V. Yakovlev, V. Pervak, F. Krausz, E. Goulielmakis
Science 334,195 (2011)

[2] Optical attosecond pulses and tracking the nonlinear response of bound electrons
M. Hassan, T. Luu, A. Moulet, O. Razskazovskaya, P. Zhokhov, M. Garg, N. Karpowicz, A. Zheltikov, V. Pervak, F. Krausz, E. Goulielmakis
Nature 530, 66 (2016)