ds3-ds4 joint 1 st task meeting, saclay 16 th -17 th may 2005 matter under extremes conditions...
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DS3-DS4 Joint 1st Task Meeting, Saclay 16th-17th May 2005
Matter under extremes conditions
Femtosecond Laser Servers
Laboratoire Francis Perrin
SPAM
Atoms, Photons and Molecules Laboratory
•Applications of Plasmas
•High Energy Density Matter
•Attophysics
• High Intensity Physics
• Dynamics of Chemical Reactivity
• Excited Biomolecules
• Nanometrics Buildings
• Theoretical Chemistry
Laser Sources Teams Technical Support(Mechanics, Vacuum, CAD)
SLIC
DS3-DS4 Joint 1st Task Meeting, Saclay 16th-17th May 2005
10 years experience - 4 servers – 10 beamlines
LUCA, tunability from 10 to 800 nm SOFOCKLE : High repetition rate (KHz) UHI10: haute puissance de 10 TW
: High repetition rate Tunability
More than 90%
Reliabili
ty for scientists CEA, France,
Europe60%, 20%, 20%
Open
Sources
Complementarity
PLFA
SLICSaclay Laser Interaction Center
DS3-DS4 Joint 1st Task Meeting, Saclay 16th-17th May 2005
3rd order Cross Correlator Optical scheme (colinear version)
Input beam
Neutraldensities
Half wave plate
Polarisers
SHG TypeI BBO crystal SFM TypeI BBO crystal
Prisms
Interference filter“Solar blind” PMT
-260 -250 -240 -230 -220 -210
1E-12
1E-11
1E-10
1E-9
1E-8
1E-7
1E-6
1E-5
1E-4
1E-3
0.01
0.1
1
Delay (ps)
Inte
nsi
ty
Sequoia is the first commercial high dynamic range third-order femtosecond cross-correlator, an ideal tool for high precision measurements of the temporal pulse shape of femtosecond lasers.
R&D in laser femtosecond temporal diagnostics
DS3-DS4 Joint 1st Task Meeting, Saclay 16th-17th May 2005
Year
Total research
effort [PM]
PM EU-
requestPersonnel
Durable Equipment
Consumables TravelTotal eligible costs (a+b)
FC, FCF requested
CEA 1 6 6 30 000,00 0,00 0,00 2 000,00 38 400,00 19 200,00
CEA 2 12 12 60 000,00 0,00 0,00 4 000,00 76 800,00 38 400,00
CEA 3 6 0 0,00 0,00 0,00 2 000,00 2 400,00 1 200,00
Total € 24 18 90 000,00 0,00 0,00 8 000,00 117 600,00 58 800,00
CEA/DS3Financial and Work Plan
Synchronisation and Feedback: RF to Laser and Electron BeamParticipants: ELETTRA, CEA, CNRS (LOA, LULI, ELYSE), ENEA, INFN, MAX-Lab
•Study the synchronisation issues between the master laser system, supplying the laser for the photo-injector, and another beam from the master laser system which could be used for seeding the first stage of a harmonic generation cascade, or for pump-probe user experiments at the different stages of the accelerator.•KHz tests on PLFA, studies on mechanical stability, amplifiers’ gain
DS3-DS4 Joint 1st Task Meeting, Saclay 16th-17th May 2005
Ma
ste
r O
sc
illato
r
dazzler
POCKELS
/2
VERDI(532 nm, 4 W)
ph1
ph2
15 fs, 70 nm
POCKELS
POCKELS
Ti Sa
TiSa
Preamplifier (Gain x3)
Regenerative Amplifier(Gain x105)
6W
9W
2W
660mW
POCKELS
JADE
JADE(527 nm, 20 W)
JADE
JADE
JADE
US
ER
S
4.7W
30 fs
Multipass Amplifier
Compressor
Stretcher
PLFA(Tunable Femtosecond Laser Platform)
(Gain x10)
Ti:Sa
1 KHz, 20 mJ, 30 fs pulses
DS3-DS4 Joint 1st Task Meeting, Saclay 16th-17th May 2005
CEA/DS3Synchronization, Jitter and Drift
How really large is the jitter in KHz laser systems ?
•Averaged on different timescalesPump Laser StabilityMechanical stability (two amplified beams)Air Flow dynamics
Non Linear effects in short pulse propagation
What about the drift ?
•Shot to Shot Pointing
Oscillator and Pump Laser Stability
•Thermal Stability
Main Goal : Systematic Analysis
DS3-DS4 Joint 1st Task Meeting, Saclay 16th-17th May 2005
CEA/DS3Experimental Strategy
Spectral Interferometry
Single Shot Cross Correlator
Spatial Interferometry
•Portability•High Rate Acquisition with minor cost
•Two amplified arms
• High Accuracy (get sub-fringe information~2 fs)• No sensitivity to pointing fluctuations• Different spectra (no contrast reduction)• Analysis of different chirps (different fringe contrast)
’
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