Ultrafast Science and Development at the Artemis Facility Edmond Turcu Central Laser facility STFC, Rutherford Appleton Laboratory, UK Micro to Nano-Photonics II, Romopto 2009 Sibiu, Romania , 3rd of September [email protected]; www.clf.stfc.ac.uk Artemis facility is open to UK and EU research groups Contents I. Artemis facility development II. Ultrafast time-resolved experiments in Artemis: atomic and molecular physics and biophysics Artemis Facility •Two femtosecond XUV beamlines – Broadband 10-100 eV XUV •Three femtosecond laser beams – Monochromatic short pulse (10-50 fs) – 14 mJ, 30 fs, 1-3 kHz CEP-stabilised – Future attosecond capability – <10fs 800nm pulses – 30 fs, tuneable UV to mid-IR •Two End-Stations • All beams synchronised and – Materials science independently configurable – Atomic & molecular physics OPA Tuneable UV to mid-IR XUV mono- D chromator CEP-stabilised e 14 mJ, 30 fs, kHz XUV Science Ti:Sapphire l generation Stations CPA system CEP a 10-100 eV XUV y Hollow fibre <10 fs CEP stable, 0.8mm Facility Layout Red Dragon laser XUV Monochromator Mono- XUV Broad- chro- band matic generation HHG XUV OPA XUV Hollow fibre compressor Slide with 4 gratings HE-Topas tuneable laser AMO Station Materials Science Station Artemis :Laser Beams HE-Topas tuneable laser Red Dragon laser system • energy/pulse: 14 mJ • repetition rate: 1 – 3 kHz • pulse duration: 30fs HHoollllooww––ffiibbrree ffss ppuullssee ccoommpprreessssoorr • CEP: 310mr rms over 1 hour • cryogenically cooled laser amp • mechanically stable laser cavity CEP Stabilisation • 14 mJ Red Dragon laser from KML is first multi-stage amplifier Group velocity system on which CEP has been Phase velocity demonstrated • 310 mrad rms CEP for over Pulse Dispersive one hour demonstrated in envelope medium Artemis • Carrier-Envelope-Phase stability becomes important for few-cycle pulses (<10 fs) • Requires stabilising path through entire system • More difficult with grating- compressor based systems as pointing variation into compressor can give large CEP slip (104 rad/rad) HE-TOPAS Tuneable Laser HE-TOPAS OPA from ‘Light Conversion’ • Energy/pulse in: 8.3mJ • Energy/pulse (signal+idler): 2.5mJ@1300nm • Tuneable:1.2µm -20µm • Will extend to: 0.2µm - 20µm • Pulse duration: ≥35fs • Repetition rate: 1 kHz Input: ~8.3mJ ~30fs 780nm Signal Idler XUV Beamlines Red Dragon laser XUV Monochromator Mono- XUV Broad- chro- band matic generation HHG XUV OPA XUV Hollow fibre compressor Slide with 4 gratings HE-Topas tuneable laser AMO Station Materials Science Station XUV Beamlines XUV monochromatic beamline for XUV broadband beamline for Atomic Materials science End-Station and Molecular Physics End-Station • >109 photon/sec @ 40eV • HHG from 800nm or 1300nm • Tunable in the 10 eV -100 eV • Flat-field spectrometer –diagnostics • XUV bandwidth ~ 20 -100 = l / Dl • XUV pulse duration ~10 – 40fs Neon