The APOLLON facility occupies about 4,500 m². The laser hall is located in an ISO8 cleanroom with a useful area of 800 m² and the laser beams are distributed across two experimental rooms, covering surfaces of 280 m² (SFA) and 490 m² (LFA, allowing focal lengths of several tens of meters). 5 m-thick concrete walls provide full radio protection.

Currently, one laser beam - F2 - is available in LFA. It is focused by a telescope combining a plane mirror with a hole and an on-axis spherical mirror. The focal length of this latter can be either 3 meters (for a focal spot diameter of 45 µm) or 9 meters (for a focal spot of 135 µm).

LFA is equipped with two independent interaction chambers (H98xW119xL135cm) but only one is currently operational.

Laser-based light source parameters


Source type
ultra-short (fs) high-power (PW) laser beam (titanium:sapphire CPA)
Peak Photon energy / central wavelenght
820 [nm]
Spectral Bandwidth FWHM / %
720 - 920 [nm]
Beam shape
Pulse duration FWHM
22 [fs]
Pulse Duration Min Max
22 - 1000 [fs]
Pulse repetition rate
167 * 10-4 [Hz]
Maximum pulse energy
15 [J]
Peak power
700 * 1012 [W]
Beam diameter
140 [mm]
Depending on the chosen focal length, the source size is either 45 µm or 135 µm. This leads to peak fluences on target of ~3 10^6 or ~3.3 10^5 J/cm2 and to peak intensities on target of ~2 10^20 or ~1.5 10^18 W/cm2.
The contrast is 10^12 up to 60 ps and 10^7 at 1 ps.
Support Laboratories

APOLLON support


An area of 520 m² is dedicated to support activities such as the control of optical components, a laser development space for new diagnostics, and a vacuum outgasing control laboratory. There are also 650 m² of control rooms, meeting rooms, and offices for operating teams and users.

In addition, a target lab is available at the LULI laboratory. Its main function is to provide the necessary skills to manufacture and characterize targets used for the experiments. Various designs and aspects are studied, ranging from simple sheets of solid materials to liquid or gaseous cells.

Mickaël Frotin
  • Time-resolved studies
  • Time-resolved studies
Emission or Reflection
  • Time-resolved studies
  • Fluorescence imaging
  • Elastic scattering
  • Inelastic scattering
  • Astronomy/Astrophysics/Astroparticles
  • Atomic & molecular physics
  • High energy & particle physics
  • High-field science, non-linear X-ray Optics
  • Matter under extreme conditions, warm dense matter, plasmas
  • Optics
  • Quantum electronics & optics
control/Data analysis
Control Software Type
  • depending on the implemented diagnostic instrument and on the providing company (ANDOR, HAMAMATSU, etc.)
Data Output Type
  • depending on the implemented diagnostic instrument and on the providing company: mainly binary files
Data Output Format
  • depending on the implemented diagnostic instrument and on the providing company: .sif, .img, .txt, .dat, etc.
Equipment That Can Be Brought By The User
Additional diagnostic equipement can be brought by users once approved by the facility; a Prevention Plan has thus to be written prior to any implementation. Note that all the materials used must be compatible with the RGA (Residual Gas Analysis) criteria imposed by the facility.