High Repetition Rate Grazing Incidence Pumped X-ray Laser operating at 18.9 nm
We have demonstrated a 10 Hz Ni-like Mo X-ray laser operating at 18.9 nm with 150 mJ total pump energy by employing a novel pumping scheme. The grazing incidence scheme is described, where a picosecond pulse is incident at a grazing angle to a Mo plasma column produced by a slab target irradiated by a 200 ps laser pulse. This scheme uses refraction of the short pulse at a pre-determined electron density to increase absorption to pump a specific gain region. The high efficiency inherent to this scheme allows a reduction in the pump energy where 70 mJ long pulse energy and 80 mJ short pulse energy are sufficient to produce lasing at a 10 Hz repetition rate. Under these conditions and by optimizing the delay between the pulses, we achieve strong amplification and saturation for 4 mm long targets.
- Research Organization:
- Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
- Sponsoring Organization:
- US Department of Energy (US)
- DOE Contract Number:
- W-7405-ENG-48
- OSTI ID:
- 15015882
- Report Number(s):
- UCRL-JRNL-204477; PRLTAO; TRN: US0501696
- Journal Information:
- Physical Review Letters, Vol. 94; Other Information: Publication date March 18, 2005; PDF-FILE: 17 ; SIZE: 0.5 MBYTES; PBD: 11 May 2004; ISSN 0031-9007
- Country of Publication:
- United States
- Language:
- English
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