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Atomic Physics

Faculty of Engineering, LTH

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Lund High-Power Laser Facility

The Lund high-power laser facility, founded in 1992, is one of the leading facilities in Europe for high-intensity laser-matter interactions, attosecond science and short-wavelength laser spectroscopy. Being a spearhead of the Lund Laser Centre, which is a European Major Research Infrastructure, this Facility is open not only to Swedish scien­tists, but also to scientists from the rest of Europe.

The lasers of the High-Power Laser Facility are:

Laser name

Repetition rate

Pulse energy

Pulse duration

Comments

Terawatt laser

10 Hz

Up to 1,5 J

40 fs

Laser system used for high-intensity experiments and particle acceleration. A low energy arm (at the level of 100 mJ) is used for generation of intense harmonics and attosecond pulses.

KHz laser

1 kHz

5 mJ

20 fs

“Work horse” of attosecond research in Lund during the last 10 years. CEP-stable and since the last upgrade tunable around 800 nm. Also equipped with a TOPAS to obtain different wavelength.

OPCPA

200 kHz

10 μJ

7 fs

New laser system based on OPCPA, with rod-type fiber pump lasers. CEP-stable.

VUV

10 Hz

mJ

1 ns

Laser system consisting of two Nd:YAG pumped dye lasers, one pulse compressed to 1 ns. Doubling, tripling, Raman shifting and four wave mixing available.

The first two lasers are based upon amplification in Ti:Sapphire. They have been constantly upgraded since their installation in 1992 and 1998. The third laser, which is just one year old, is based upon a different concept: OPCPA. It combines optical parametric amplification in a crystal and chirped pulse amplification where an optical pulse is stretched in time, amplified and then compressed again. These lasers have the same nominal wavelength (800 nm) but vastly different pulse energy and repetition rate.

Front-line research is performed in a range of fields by local research teams, in collaboration with national and international visitors.

  • Fundamental laser-matter interactions at ultra-high intensities, in the strongly relativistic regime ~1019 -1020 W/cm2

  • Laser-based plasma acceleration of electrons (~GeV) and protons, and applications, e.g. intense x-ray pulses from the laser-accelerated electrons

  • Generation of intense pulses of coherent XUV radiation and applications, e.g. to seeding of free electron lasers and to time-resolved coherent imaging

  • Generation of attosecond pulses and applications to time-resolved studies of electronic processes in atoms, molecules and surfaces

  • Time-resolved laser spectroscopy of atoms and ions for astrophysics
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The Lund high-power laser facility has been founded by the Knut and Alice Wallenberg Foundation and by Lund University