1. LASER SYSTEM STATUS G.Gatti , A. Ghigo , C.Vicario , P.Musumeci ,
M. Petrarca , S. Cialdi , D. Filippetto
REVIEW COMMITTEE 16/11/05

2. LASER SYSTEM STATUS OVERVIEW PULSE SHAPING Measurements & Calculations
SYSTEM PERFORMANCES Characterization
PULSE SHAPING Measurements & Calculations
UV TEMPORAL DIAGNOSTICS X-Correlator
Streak Camera
TIMING RF Synchronization & Jitter Measurement
RF Power Triggering
BEAM TRANSFER LINE Designed Set-up, Feedback

3. RF Reference R&S 2,856 GHz f/36 Pumps Seed Line Ext. Synch. Evolution
Nd:YLF
Continuum
Nd:Yag
Verdi
Nd:YVO4
Pumps
800 nm
10 nJ
80 MHz
100 fs
Hidra
CPA Ti:Sa Amplifier
RGA + 2 MP
Mira
Ti:Sa Oscillator
THG
UV Stretcher
Seed Line
800 nm
50 mJ
10 Hz
100 fs
266 nm
4 mJ
10 Hz
100 fs
266 nm
1,8 mJ
10 Hz ps
DAZZLER
TeO2
Synchro Lock
PLL
RF Reference
R&S 2,856 GHz
Ext. Synch.
f/36

4. CHARACTERIZATION : OSCILLATOR
SPECTRUM
GAUSSIAN SPECTRUM
∆λ=12nm FWHM
PULSE LENGHT
130 fs FWHM
205 fs FWHM
AUTOCORRELATION
Single Shot AutoCorrelator

5. CHARACTERIZATION : AMPLIFIER
NEW IR TEMPORAL DIAGNOSTIC
400 fs STREAK-CAMERA
TRANSVERSE INTENSITY
TEM00
PULSE LENGHT
104 fs FWHM
AUTOCORRELATION
2 DIFFERENT COMPRESSOR
CONFIGURATIONS (CHIRP)

6. CHARACTERIZATION : UPCONVERSION
THG CRITICAL ELEMENT
SLIGHTLY OUT OF SPECS
2 mJ REQUESTED
1.4mJ MEASURED
NEW BBO
BLUE SPECTRUM
SH-BLUE
400 nm
COMPROMISE BW/POWER
UV SPECTRUM
M2x: 2.7
M2y: 1.9
TH-UV
266 nm

7. STABILITY MEASUREMENTS
Out of Amplifier at 800 nm
2% Power Variations

8. PULSE SHAPING GOAL: 10ps Flat Top- 1ps rise time
Frequency Domain Filtering Through AO Device: DAZZLER
EXPERIMENTAL SETUP
-X-CORRELATOR
NEW UV TEMPORAL
DIAGNOSTIC READY
-FIRST RESULTS
OBTAINED IN FRASCATI
X-CORRELATOR
DIAGNOSTICS
SPECTROM.
SPECTROM. IR IR
BLUE UV
Hidra
CPA Ti:Sa Amplifier
RGA + 2 MP
Mira
Ti:Sa Oscillator
THG
DAZZLER
TeO2
UV Stretcher

9. PULSE SHAPING: FREQ. DOMAIN
METHOD:COMPENSATE AMPLIFIER 2nd ORDER AND HIGHER
MEASURING 1st 2nd 3rd HARMONIC & COMPARING WITH CALCULATIONS
CHANGING CHIRP TERM & FIXING HIGH ORDER
DAZZLER
Stretcher
Amplifier
(RGA)
AMPLIFIER
Power
Amplifier
(Multipass)
2nd ORDER COMPENSATION
Ф2=25000 fs2
Compressor
1st H. 800nm
2nd H. 400nm
TO UPCONVERSION
3rd H. 266nm

10. PULSE SHAPING: FREQ. DOMAIN
1st H. 800nm
2nd H. 400nm
3rd H. 266nm

11. PULSE SHAPING: TIME/FREQ. DOMAIN
CHANGING CHIRP
FOCALIZING UV

12. X-CORRELATOR UV BBO CRYSTAL BLUE IR DELAY LINE
-HIGH RESOLUTION (PROBE BEAM)
-REMOTE CONTROLLED UV
BBO CRYSTAL
BLUE IR
DELAY LINE

13. AND SPECTRUM MEASUREMENTS
X-CORRELATOR
TILT OF 2nd HARM CRYSTAL
GOOD MATCH WITH THEORY
AND SPECTRUM MEASUREMENTS

14. X-CORRELATOR t t BBO SOLUTIONS PLANNED NEED OF A REFERENCE
UV STRETCHER
GIVES
SPATIAL DISPLACEMENT
ON WAVELENGHTS
INTERACTION VERY SENSITIVE TO BEAMS DISPLACEMENTS, TRANSVERSE DIMENSIONS,
POWER OF THE BEAMS t
SOLUTIONS PLANNED
NEED OF A REFERENCE
STREAK CAMERA
UPGRADE FOR UV t
BBO

15. TIMING: JITTER MEASUREMENTS (LASER SIDE)
Synchro Lock
RF Reference
R&S 2,856 GHz
f/36
PLL2
f X 9 LO
Mira
Ti:Sa Oscillator
BPF
9th H.
MIXER 2 LO
PLL1
BPF
Fundam.
MIXER 1
DRIVING SYSTEM
f=c/2L
PZT
GALVO L

16. INTERNAL TIMING : RF POW TRIG ?
79,3 MHz
SYNC.IN
SDG
RF system
4 µs before
laser beam
10 Hz
f/100
REP. RATE IN
DELAY
GENER.
f/100
EXT. LINE
SYNCH.
QSW
PC1
PC2
10 Hz
10 Hz
1 KHz
Evolution
Nd:YLF
Continuum
Nd:Yag
Verdi
Nd:YVO4
Hidra
CPA Ti:Sa Amplifier
RGA + 2 MP
Mira
Ti:Sa Oscillator
THG
DAZZLER
TeO2
UV Stretcher

17. TRANSFER LINE CCD FP PIPE CLEAN ROOM Cathode
YAG
CCD M5 M1 FP L1
PIPE
Computer MM G
CLEAN ROOM L2 L4 W C2 L3 C1
Cathode
- Positioning Feedback Ready
Optics Arriving
Optical Table Arriving M3 M2 M4 r

18. CONCLUSIONS PERFORMING SYSTEM PULSE SHAPING IN PROGRESS
CONTACTS FOR OTHER WAYS
NEED OF EFFICIENT TIME DIAGNOSTIC
SYNCHRONIZATION IN AGREEMENT WITH SPECS
WAITING LAST COMPONENTS FOR TRANSFER LINE MOUNTING
DEVELOPED SOFTWARE FEEDBACK FOR POSITIONING STABILITY