Access Facilities - CELIA

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Contact: Philippe Balcou Email

The Centre Laser Intenses et Applications (CELIA) laboratory has a strong expertise in ultrafast science and intenses laser pulses. Its experimental activity relies on the development of “state of the art” ultrashort laser sources and the development and use of secondary sources such as ultrashort X-ray sources (fs, ps) and ultrashort XUV sources based on high order harmonic generation (as and fs). These secondary sources are now well equipped for being routinely used and our 10 years of experience in this domain provides both recent experimental equipments and an experienced experimental environment. Celia benefits also of a theoretical activity in all the above mentioned domains and on fusion physics and, on the technical side, Celia benefits for a nice environment in terms of machine shop and mechanical support.

Activities: CELIA has experimental expertise in many fields related to femtosecond intenses pulses. These domains cover

• The generation of intense femtosecond sources by developing new laser systems (1 KHz Ti:sapph laser system, 40 fs, 10 mJ; 10 Hz Ti:sapph laser system, 200 mJ 40 fs, multi kHz up to MHz laser system and so on )
•  The generation of short X-ray pulses optimized by using several targets (solids, cluster), their characterization and applications.
•  The generation, characterization and applications of ultrashort XUV pulses generated via high order harmonic generation. The applications developed around these sources are focused on solid state and molecular dynamics

Research opportunities within the Laserlab access activity:

CELIA offers several intense laser and secondary beam lines based on these lasers:

• 1 kHz, 40 fs, 8 mJ, Ti:sapph laser source.
• 10 Hz, 40 fs, 200 mJ Ti:Sapph laser source (equipped with a 100 Hz, 4 mJ, 40 fs output).

Both of these laser systems are available for laser oriented studies.

The 1 kHz line is also equipped with:

• a hard x-ray generation system where the x-ray emission is obtained by strong field ionisation of different materials. This line is nicely equipped for characterisation, control and use of the X-ray pulses and lot of efforts has been devoted to its optimization.

The 1 kHz laser source is connected with two xuv lines that are accessible in the access program.

•  One being equipped for experiments on solids and the observations of their relaxation dynamic (time resolved observation of fluorescence both by frequency mixing or by using a dissector and electron photoemission).
•  One is equipped for the observation and excitation of molecular dynamics in gas phase. This line is also connected to a NOPA (He Topaze) that allows us to generate high order harmonic in gases with an accordable fundamental wavelength around 2 µm which can also be used directly for laser studies.

These lines are equipped with the standard apparatus for performing XUV-IR pump-probe experiments (XUV and IR control and characterization, time of flight electron and ion spectrometer, pump – probe line for rabbit and frog crab experiments, XUV spectral selection).