1. Operated by the Southeastern Universities Research Association for the U.S. Dept. of Energy Thomas Jefferson National Accelerator Facility FEL Power Achieved Output Power: 25W@74.85MHz 13W @748.5MHz, Need >25W SHG power and conversion efficiency vs. diode current for two pulse repetition rates. P, power. E, efficiency

2. Operated by the Southeastern Universities Research Association for the U.S. Dept. of Energy Thomas Jefferson National Accelerator Facility FEL SHG Efficiency  Effic: ~70% with 42W input,  Output 20W IR from 2 nd Amp SHG 10W

3. Operated by the Southeastern Universities Research Association for the U.S. Dept. of Energy Thomas Jefferson National Accelerator Facility FEL Estimated Attainable SHG Power  IR50W/0.5GHz, 100nJ, 30% effi, 15W/SHG  IR50W/1GHz, 50nJ, 14% effi, 7W/SHG

4. Operated by the Southeastern Universities Research Association for the U.S. Dept. of Energy Thomas Jefferson National Accelerator Facility FEL SHG Cost 1.LBO crystal : $850 2.Temperature controller : $500 2.Mirror/Lens: ~ $1000 3.Mechanics: ~$600 4.Delivery: 4~6weeks

5. Operated by the Southeastern Universities Research Association for the U.S. Dept. of Energy Thomas Jefferson National Accelerator Facility FEL External Cavity Amplifier Option  Gain: >100,  10W(100nJ) input, 10uJ output

6. Operated by the Southeastern Universities Research Association for the U.S. Dept. of Energy Thomas Jefferson National Accelerator Facility FEL Linear External Cavity Amplifier  Gain: >100,

7. Operated by the Southeastern Universities Research Association for the U.S. Dept. of Energy Thomas Jefferson National Accelerator Facility FEL RF Locking Loop  To synchronize with accelerator Reference RF, MO-37MHz-74.85MHz New RFCM? Schematic of CLX phase locking system.

8. Operated by the Southeastern Universities Research Association for the U.S. Dept. of Energy Thomas Jefferson National Accelerator Facility FEL Achieved 1.Wavelength: 532nm 2.Pulse width: ~30 ps (25ps) 3.Pulse rep rate: 74.85MHz and 748.5MHz 4.Output Power: 25W@74.5 5.Beam quality: M² <3 (X:1.3 Y:1.1) 6.Instability: Amplitude: <0.5% p-p (~1%p-p) Phase noise: < 1ps (~0.4ps) Pointing: <20urad (~20/40urad) 7.Beam profile: Circular (up to 25% ellipticity permitted) ?

9. Operated by the Southeastern Universities Research Association for the U.S. Dept. of Energy Thomas Jefferson National Accelerator Facility FEL A look at ADL All solid, diode-pumped high power, high rep. rate, short pulse laser Picture here

10. Operated by the Southeastern Universities Research Association for the U.S. Dept. of Energy Thomas Jefferson National Accelerator Facility FEL Overview of Laser Contrast Some available commercial lasers Quantronix, Integra-E, DPSSL, 3.5mJ/1KHz/100fs, 1500:1(CR) TBWP, GE-100, 1W/75MHz/30ps, >100:1 (PER) SP Tsunami, 1W/75MHz/100fs, 500:1(PER) Coherent Mira, ? ( Comparable to Tsunami) Commercial TW Ti:S system, ~ 10 5 (CR) KJ glass laser (ICF driver), > 10 8 (CR) Others?

11. Operated by the Southeastern Universities Research Association for the U.S. Dept. of Energy Thomas Jefferson National Accelerator Facility FEL Advanced Drive Laser : Status, Issues, and Solutions