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GOLF

GOLF. Summary. Group overview Operating laser systems Research and Development Outlook. Group overview. Directeur Ph. Balcou (DR) Adjoints au Directeur H. Bachau (DR) et V. Tikhonchuk (PR). Secrétariat / Gestion. Groupe PEPSI L. Hallo * C. Fourment* G. Geoffroy* G. Malka (MC)

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GOLF

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  1. GOLF

  2. Summary • Group overview • Operating laser systems • Research and Development • Outlook

  3. Group overview Directeur Ph. Balcou (DR) Adjoints au Directeur H. Bachau (DR) et V. Tikhonchuk (PR) Secrétariat / Gestion Groupe PEPSI L. Hallo* C. Fourment* G. Geoffroy* G. Malka (MC) Ph. Alasimone (T) Technologie et support S. Aussel (T) M. Mondolfi (T) F. Catelle*** R. Bouilleau (AI) A. Filippov (IE) A. LeGoff (AI) L. Merzeau (T) D. Briand (T) Loic Baucher (IE) Équipes de Recherche Plasmas chauds et denses V. Tikhonchuk (PR) G. Schurtz* J. Breil* B. Dubroca** J.-L. Feugeas* P. Nicolai* M. Olazabal* L. Hallo* P.-H. Maire* X. Ribeyre* E. d’Humières (MC) Sources X, Plasmas et ions H. Jouin (PR) F. Dorchies (CR) C. Stenz (PR) C. Fourment* S. Hulin* O. Peyrusse* S. Jéquier (MC) B. Pons (PR) J. Santos (MC) Groupe optique et Lasers femto E. Cormier (MC) D. Descamps* C. Medina (AI) S. Montant* S. Petit (IR) Harmoniques XUV et applications P. Martin (CR) H. Bachau (DR) E. Constant (CR) B. Fabre (MC) G. Geoffroy* Y. Mairesse (CR) E. Mevel (PR) M à D AlphaNov : J. Lopez (IR)

  4. Group members: permanent staff Eric Cormier A. Prof., HDR Dominique Descamps CEA Engineer Capucine Médina CNRS AI Sébastien Montant CEA Engineer Stéphane Petit CNRS IR

  5. Group members : Postdocs and Phd Students Marie-Christine Nadeau Coralie Fourcade-Dutin Johan Boullet Julien Nillon Guillaume Machinet Loic Meignien François Labaye Christophe Hazera

  6. Group responsibilities • I) Operate and develop the laser infrastructures • II) Research and development in optics and lasers: ultrafast and ultrashort sources

  7. Group Structure Laser systems maintenance and evolution Man power : 2.2 Dominique 70 % 30 % Capucine 80 % 20 % Stéphane 70 % 30 % Research and developments in optics and lasers Eric 50 % Postdocs (2) And Phd (6) Sébastien 100 % Total man power : 10.3 Man power (permanent): 2.3

  8. Summary • Group overview • Laser infrastructures • Research and Development • Outlook

  9. Laser infrastructures • Group missions • Daily operation of Aurore (1 kHz) and Eclipse (10 Hz) laser facilities • Install online diagnostics for permanent monitoring • Upgrade the laser performances (COLA project) • Access: • National (5 weeks/year) • European (8 weeks/year) • Human resources and beamtime Eclipse operating (2 beams at 10 Hz) Eclipse under construction Aurore upgrade (2 beams) Move to new building

  10. Aurore facility Nd:YLF 1 kHz 15W Nd:YLF 1 kHz 29W Nd:YLF 1 kHz 29W Öffner strecher Nd:YLF 1 kHz 29W Nd:YLF 1 kHz 29W PC Picker 1 nJ-270 ps Cryogenic multipass amplifier 1.8 mJ 180 ps Ti:sapphire oscillator 20 fs Regenerative amplifier PC Cleaner 22 mJ 1 kHz Compressor Compressor Laser specifications: • Repetition rate : 1 kHz • - Bandwidth : 30 nm FWHM @ 810 nm • - Pulse duration : 35 fs FWHM • - Energy : 2 x 7 mJ • - Temporal contrast : Prepulse at 8 ns ~ 6 10-8 ASE level ~ 3 10-8 • - Intensity on target : 7 1016 W/cm2 (with f=200 mm) • - Energy stability : ± 1,4% rms shot to shot 7 mJ-35 fs 1 kHz 7 mJ-35 fs 1 kHz TOPAS (1.2-2.2 mm) 600 mJ-50 fs 1 kHz Laser room + 3 Experimental areas

  11. Eclipse facility Nd:YAG 100Hz 4W Nd:YAG 10Hz 10 W Öffner strecher Multipass amplifier Multipass amplifier PC picker 1 nJ-270 ps 1 mJ 8 mJ Ti: sapphire oscillator 20 fs Regenerative amplifier 300 mJ 10 Hz PC cleaner Compressor in air Compressorunder vacuum Laser specifications: • Repetition rate : 10 Hz • - Bandwidth : 28 nm FWHM @ 812 nm • - Pulse duration : 40 fs FWHM • - Energy : 170 mJ • - Temporal contrast : Prepulse at 12 ns ~ 4 10-9 ASE level ~ 10-7 • - Intensity on target : 2 1018 W/cm2 (with f=250 mm) • - Energy stability : ± 5,1% rms shot to shot 5 mJ-40 fs 100 Hz 170 mJ*-40 fs 10 Hz Laser room + 3 Experimental areas *present configuration 2 beams of 85 mJ

  12. GOLF impact on the other groups • TW systems are the heart of the experimental research at CELIA • We manage now to provide distributed beam lines allowing 5 to 6 experiments in parallel • High productivity of the experimental groups relies on our ability to reliably run the systems on a daily basis • Future CELIA laser sources will emerge from our reseach • High implication of 3 out of the 5 members of the group High pressure on the group members

  13. Summary • Group overview • Laser infrastructures • Research and Development • Outlook

  14. Research areas and strategy BulkTi:Sapphire and new materials Fiberlasers and amplifiers: fs, ps, ns and cw Non linear optics: OPA/OPCPA Post-compression Future CELIA facilities Diagnostics: Spider, FROG, wavefront, contrast Applications: HHG @ 1 MHz External Fabry Pérot cavity enhancement Ultrafast micro machining Tunable IR sources (600nm – 2.5 µm) Tunable HHG Highly non-linear fiber characterization …

  15. Research axis Ultrashort pulses Ultra high repetition rate

  16. Research axis Ultrashort pulses Ultra high repetition rate Post Compres. OPCPA Fiber lasers bulk ps fs ns cw FP Cavity

  17. Research axis Ultrashort pulses Ultra high repetition rate Post Compres. OPCPA Fiber lasers bulk ps fs ns cw FP Cavity 10 mJ 10 fs Low energy Octave span. CEP self stab. 10fs 100kHz HHG µ machining 30 W 270 fs 100 W,977nm 1mJ,977nm X-ray Polar. g-ray

  18. Research axis Ultrashort pulses Ultra high repetition rate Post Compres. OPCPA Fiber lasers bulk ps fs ns cw FP Cavity 10 mJ 10 fs Low energy Octave span. CEP self stab. 10fs 100kHz HHG µ machining 30 W 270 fs 100 W,977nm 1mJ,977nm X-ray Polar. g-ray WR Int. Col., WR Pat. WR, Pat. Indus. Indus. WR, Pat. Indus. Int. Col. WR

  19. Research axis Product line of Amplitude Systèmes Ultrashort pulses Ultra high repetition rate Post Compres. OPCPA Fiber lasers bulk ps fs ns cw Societal applications FP Cavity 10 mJ 10 fs Low energy Octave span. CEP self stab. 10fs 100kHz HHG µ machining 30 W 270 fs 100 W,977nm 1mJ,977nm X-ray Polar. g-ray WR Int. Col., WR Pat. WR, Pat. Indus. Indus. WR, Pat. Indus. Int. Col. WR Spin off company

  20. #1 High energy post-compression using gas ionization ne=2.4 1016 e/cm3 100% 30fs 0% • Gas ionization = plasma creation : time evolution of free electron density (ne) • Temporal phase :new frequencies ADK model P=1 mbar He I= 2.1015W/cm2 (40 fs)L=40 cm Broadened and blue-shifted spectrum

  21. #1 High energy post-compression using gas ionization Propagation in the capillary (Φcapillary = 420 µm) He gas Ein = 70 mJ Eout= 25.6 mJ (without gas) Coupling efficiency 36% 40cm Intensity in the capillary : 2 1015 W/cm2 Output energy and pulse duration Spectrum at different He pressure 13.7 mJ 11.4 fs Coll. XUV Group

  22. #2 Ultra high repetition rate HHG Gas jet XUV grating CCD Camera Fiber CPA system Fiber laser system Tight focusing chamber Up to 30 W 280 fs 100 KHZ – 1 MHz

  23. #2 Ultra high repetition rate HHG FWHM = 280 fs M2 = 1.3 Rod type fibers 33.2 nm 100 kHz 1 MHz 68.7 nm

  24. #2 Ultra high repetition rate HHG • First demonstration of HHG driven by a FCPA system • Coherent radiation down to 33 nm (40 eV) • XUV pulses at rep. rate up to 1 MHz • System is tunable from 100 kHz to 1 MHz • System perfectly adapted for pump probe experiments Move synchrotron based applications to table top experiments Revisit the Ti:sapph based HHG experiments at MHz repetition rates Patent pending

  25. #3 Few cycles pulses at 100 KHz Strong driving laser: Yb Fiber     High repetition rate High intensity Few cycle pulses CEP stabilized OPA/NOPA/OPCPA l = 450-1000 nm E = 0.01 – 100 µJDl = 200 nmDt < 10 fs Post-compressionCapillary Dt = 50 fs Fiber pumped OPCPA

  26. #3 Few cycles pulses at 100 KHz CEP stabilized Modelocked source Signal stretcher Compressor Parametric amplifiers Yb Fiber CPA pump Rainbow 20 pJ @ 1030 • 7 fs Ti:Sapph Oscillator • 300 nm @ -10dB • CEP stabilized Signal Pump

  27. #3 Few cycles pulses at 100 KHz • Spectrum • Duration Dt field = 10 fs 14.1 fs Dl = 68 nm 68 nm amplified bandwidth @ 720 nm 11 fs (3.6 cycles)

  28. Summary • Group overview • Laser infrastructures • Research and Development • Outlook

  29. Laser infrastructures • Aurore (1 KHz) • Increase average power up to 35 W (additional Ti:sapphire amplifier)3 x 8 mJ or 1 x 25 mJ (2010) • Reduce pulse duration down to 25 fs (new oscillator + spectral filter + dazzler)1 TW – 1 kHz laser (2010) • Few cycle pulses at 2 µm using post-compression of TOPAS system (2010) • Eclipse (10 Hz) • Improve energy stability (stabbler) (2010) • Temporal contrast enhancement up to 1010 (XPW filter+double CPA) (2012) • Reduce pulse duration down to 30 fs (spectral filter + Dazzler) (2012)

  30. Research and Developments • High energy CEP stabilized OPCPA • High brightness optical pumping of Yb • CEP stabilized few cycles at 100 KHz (Solstice) • Fiber lasers at 2 µm • Passive FP cavities • X-rays and g-rays via Compton scattering

  31. g-ray production • (3) High power laser • fiber laser @ CELIA hn g e- • (2) High finesse FPcavity • 4-mirror @ LAL • Low emittance e- source • ATF @ KEK

  32. g-ray production Fiber laser and FP cavity 54 m Beam Energy → 1.28GeV Beam Size 　→ 100μm×10μm Emittance　→ 1.0x10-9 rad.m 1.0x10-11 rad.m (Ultra Low !!) 30 m

  33. Technology transfer

  34. Group overview (extra) • Group members turn over

  35. Contracts Total : 3 M€

  36. Scientific production • Active permanent man power dedicated to research: 2.3 ACL / man power = 17 papers / per person

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