HE_TEWALAS System modules: (fig. 1)

1. Synergy PRO Oscillator with > 100 nm bandwidth, pumped by a 532nm laser with 5W CW Power, able to generate 10 fs pulse, 5 nJ energy per pulse, 75 MHz frequency repetition.

2. Stretcher (Offner diffraction gratings), 110 nm spectral bandwidth.

3. Dazzler 800 HR for phase control.

4. Pulse Selector (Pockels Cell) 10 Hz.

5. Ti:Sapphire Regenerative Amplifier Amplificator.Mazzler for pulse shape control after regenerative amplifier.

6. Nd:YAG Laser for Ti:Sapphire crystal pump: 30 mJ, 532 nm, 10 Hz.

7. Pulse Cleaner module.

8. GenPulse module to synchronise the triggering of the system different Pockels cells with the pulse train of the oscillator.

9. Multi-pass Ti:Sapphire Amplifier (MP1) with output 30 mJ energy at 10 Hz.

10. Nd:YAG pump Laser, > 120 mJ at 532 nm, 10 Hz, for MP1.

11. Multi-pass Ti:Sapphire Amplifier (MP2) with output 600 mJ energy at 10 Hz.

12. PROPULSE+ pump laser, 2J at 532 nm, 10 Hz, for MP2.

13. Motorized Attenuator.

14. Compressor.

15. Laser system Control, Diagnostics and Optical Alignment Devices.

Fig. 1. TEWALAS System diagram.

TEWALAS Main Characteristics:

• Repetition frequency 10 Hz.

• Central wavelength 810 nm.

• Bandwidth > 65 nm.

• Maximum energy per pulse before attenuator: 630 mJ.

• Energy per pulse after attenuator 40 mJ.

• Energy per pulse after compressor 29 mJ.

• Pulse duration 23-27 fs (tipically 25 fs).

• Peak power > 1 TW.

• Energy per pulse stability (RMS) 1.85%.

• Contrast in ns domain 8x10^-8.

• Contrast ps @ 1 ps 2x10^-5.

• Contrast ps @ 3 ps 3x10^-6.

• Contrast ps @ 5 ps 2x10^-7.

• Contrast ps @ 15 ps 2x10^-8.

• Contrast ps @ 30 ps and earlier 7x10^-10.

Image during installation

System image

Command and Control Unit during working

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