Environment
The research is conducted in CELIA, located in Bordeaux
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CELIA |
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The lab: The Center for Intense Lasers and Applications (CELIA) is a research lab devoted to ultrashort laser developments and applications. The HarMoDyn project is mainly conducted on the 1kHz Ti:Sa Aurore laser system which delivers 7-mJ 25-fs pulses at 800 nm. Other laser systems are also available if needed: 10 Hz, 110mJ, 45 fs Ti:Sa Eclipse system and a novel MHz fiber based system which was recently used to generate high harmonics. CELIA is a user facility open: external users can access it through the Laserlab Transnational Access |
Aurore laser system |
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Pump and probe pulses: In order to tune the wavelength of the pump and probe pulses, we use noncolinear optical amplifiers: - a HE-TOPAS which delivers 700 microjoules pulses between 1.6 and 2.2 microns. - a home-built NOPA which delivers 20 microjoules between 500 and 750 nm For fs-VUV experiments, we can use odd and even harmonics of the 800 nm pulses. |
Home-Built NOPA(Photo Julien Delavaux)
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Detectors:
In ENLOS experiments, the high harmonic radiation is fully characterized:
- the spectrum is measured by a flat-field XUV imaging spectrometer
- the polarization state (ellipticity, angle) is measured by an XUV polarizer
- the phase is measured by two-slit interferometry or transient grating spectroscopy
In fs-VUV experiments, several detectors can be used:
- a simple ion or electron time-of-flight spectrometer
- a magnetic bottle electron spectrometer
- a velocity map imaging spectrometer
