1. LASER SAFETY External EHS Expert Panel Workshop

2. ELI

3. ELI L1
Developed in-house
100 mJ / <20 fs / 1 kHz / 850 nm
E1 hall beamlines – PXS, SRS, HHG

4. ELI L1

5. LASERS @ ELI L1 L1 oscillator room L1 Main Hall Thin disk pump laser 4
(450 mJ)
Thin disk pump laser 1
(17 mJ)
Thin disk pump laser 2
(55 mJ)
Thin disk pump laser 3
(130 mJ)
L1 oscillator room
L1 Main Hall

6. LASERS @ ELI L2 Nanosecond OPCPA pumped by DPSSL
Technology development beamline
PW pulses <15 fs, rep rate Hz
Pump laser using cryogenic Yb:YAG DPSSL technology developed by STFC Rutherford Appleton Laboratory
Implementation in two stages Stage 1: Pumped by existing 10 J 10 Hz laser Stage 2: Pumped by 100 J 10 Hz laser developed by STFC for HiLASE
Currently installed at IoP.

7. LASERS @ ELI L2 Vacuum tubes April 2014 Amplifier head April 2014
Front End July 2014 (mid-installation)
High performance pulse shaping system

8. ELI L2

9. ELI L3
Developed as HAPLS at LLNL
Compressor developed by ELI BL
Drives ELIMAIA (p+, ion acceleration), Plasma Physics, HELL, LUX (e- acceleration)
PW compressor

10. LASERS @ ELI L3 Parameter Value Peak power 1PW Repetition rate 10 Hz
Pulse energy after compression
30 J
Pulse duration
30 fs
Central wavelength
820 nm
Output pulse energy RMS stability
better than 0.6%
Temporal power contrast
1:109 initial, 1:1011 optimized
Electrical consumption
<150 kW

11. ELI L4
Developed in cooperation with NE-EKSPLA (ELI BL develops 10 PW compressor, diagnostics and timing system)
1.5 kJ (compressed) / 10 PW / 150 fs / 0.5 to 10 ns (adjustable in 100 ps steps) / 1 per minute / ~1050 nm
Drives ELIMAIA (p+, ion acceleration), Plasma Physics, HELL, LUX (e- acceleration)

12. 0.5 to 10 ns (adjustable in 100 ps steps)
ELI L4
Parameter
Value
Main beam energy
1.5 kJ (compressed)
Main beam peak power
10 PW
Auxiliary beam energy
150 J (compressed)
Auxiliary beam peak power
1 PW
CPA pulse duration (FWHM)
150 fs
Long pulse duration
0.5 to 10 ns (adjustable in 100 ps steps)
Shot rate
1 per minute

13. LASERS @ ELI ASTRELLA LASER
Alignment laser – 6mJ, fs, IR
E1 hall – SRS, PXS, HHG

14. LASER SAFETY CONTROLS Engineering X administrative controls PSI X LSS
Eye protection
Training
Laser safety program
LSO
Medical investigations

15. Questions
What is an effective ballance between engineering and administrative controls?
What is an approach for addressing effective eye wear in areas with multiple λs?
How to establish robust laser safety program for laser developing researchers?

16. Discussion