Light Conversion's HE‑TOPAS‑Prime is a 3‑stage femtosecond optical parametric amplifier of white-light continuum. It is a TOPAS‑Prime with additional high energy and low dispersion amplification stage which allows using up to 60 mJ of pump energy (or even more for custom solutions) and maintaining the shortest possible pulses at the output. Two product lines of HE‑TOPAS‑Prime are available: a "standard energy" line with input energy of up to 8 mJ @35 fs (up to 20 mJ @100 fs) and HE‑TOPAS‑Prime‑Plus with increased input energy acceptance of up to  18 mJ @ 35 fs (up to 47 mJ @ 100 fs). 60 mJ input energy is possible with longer input pulse of ~150 fs.

Both product lines come with wavelength extension options, which can cover the maximum wavelength range from 189 nm to 20 μm for HE‑TOPAS‑Prime and 240 nm to 20 μm for HE‑TOPAS‑Prime‑Plus.

We also offer a HE‑TOPAS‑800‑ps model for picosecond pump pulses.


  • Pump energy up to 60 mJ
  • Energy conversion into the parametric radiation 30 – 50 %
  • Tuning range spanning from 189 nm to 20 μm, computer controlled
  • High output stability throughout the entire tuning range
  • Fresh pump channel improves temporal and spatial properties of sum-frequency options

Download datasheet here.

Output Specifications for both HE‑Topas‑Prime and HE‑Topas‑Prime‑Plus are given for:

  • 800 nm
  • 6 mJ
  • 30 – 40 fs
  • Gaussian beam pump at 1 kHz
  • 800 nm
  • 10 mJ
  • 100 fs
  • Gaussian beam pump at 1 kHz

Note 1:
Pump pulse duration and wavelength affects the specifications. Check the specifiaction with us if the wavelength or the pulse duration differ from above values.

Note 2:
HE‑TOPAS‑Prime output energy scales up linearly in 3 – 20 mJ range, provided the device is installed and optimized for a particular pump energy (the device has to be re-optimized for optimal performance should the pump energy change more than ±10 % from the installation value).



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