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LASE R SYS TEM S TATUS

LASE R SYS TEM S TATUS. G.Gatti , A. Ghigo , C.Vicario , P.Musumeci , M. Petrarca , S. Cialdi , D. Filippetto. REVIEW COMMITTEE 16/11/05. LASE R SYS TEM S TATUS. OVERVIEW SYSTEM PERFORMANCES Characterization PULSE SHAPING Measurements & Calculations UV TEMPORAL DIAGNOSTICS X-Correlator

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LASE R SYS TEM S TATUS

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  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 • SYSTEM PERFORMANCESCharacterization • PULSE SHAPINGMeasurements & Calculations UVTEMPORAL DIAGNOSTICSX-Correlator • Streak Camera • TIMINGRF Synchronization & Jitter Measurement RF Power Triggering • BEAM TRANSFER LINEDesigned Set-up, Feedback

  3. 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 0.5-12 ps DAZZLER TeO2 RF Reference R&S 2,856 GHz Synchro Lock PLL f/36 Ext. Synch.

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

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

  6. BLUE SPECTRUM UV SPECTRUM • M2x: 2.7 • M2y: 1.9 CHARACTERIZATION : UPCONVERSION THG CRITICAL ELEMENT SLIGHTLY OUT OF SPECS 2 mJ REQUESTED 1.4mJ MEASURED NEW BBO SH-BLUE 400 nm COMPROMISE BW/POWER 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 3rd H. 266nm TO UPCONVERSION

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

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

  14. X-CORRELATOR 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. BPF Fundam. BPF 9th H. TIMING: JITTER MEASUREMENTS (LASER SIDE) RF Reference R&S 2,856 GHz Synchro Lock f/36 PLL2 f X 9 LO Mira Ti:Sa Oscillator MIXER 2 LO PLL1 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 REP. RATE IN f/100 DELAY GENER. QSW PC1 PC2 f/100 EXT. LINE SYNCH. 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 YAG M5 CCD M1 FP L1 PIPE Computer MM G CLEAN ROOM L2 L4 W C2 C1 L3 Cathode • - Positioning Feedback Ready • Optics Arriving • Optical Table Arriving M3 M2 M4

  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

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