Demonstration of transient gain x-ray lasers near 20thinspthinspnm for nickellike yttrium, zirconium, niobium, and molybdenum

Journal Article · Fri Jan 01 04:00:00 EST 1999 · Optics Letters

DOI:https://doi.org/10.1364/OL.24.000101· OSTI ID:302894

Dunn, J; Nilsen, J; Osterheld, A L ^[1]; Li, Y ^[2]; Shlyaptsev, V N ^[3]

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1. Lawrence Livermore National Laboratory, Livermore, California 94550 (United States)
2. Institute for Laser Science and Applications, Lawrence Livermore National Laboratory, Livermore, California 94550 (United States)
3. Department of Applied Science, University of California Davis-Livermore, Livermore, California 94550 (United States)

We demonstrate strong lasing on the Ni-like 4dthinsp{sup 1}S{sub 0}{r_arrow}4p thinsp{sup 1}P{sub 1} transition at 18.9, 20.3, 22.0, and 24.0thinspthinspnm for Mo, Nb, Zr, and Y ions, respectively, using the transient collisional excitation scheme. Approximately 5thinspthinspJ of laser energy in a combination of a 600-ps pulse and a 1-ps pulse from the Compact Multipulse Terawatt (COMET) tabletop laser system is used to irradiate slab targets of these materials. Small-signal gains of 17{endash}26 cm{sup {minus}1} are determined on the 4d{r_arrow}4p transition, with overall gain{endash}length products gL of 11{endash}12. Lasing is observed and gain is measured on the 4fthinsp{sup 1}P{sub 1}{r_arrow}4d thinsp{sup 1}P{sub 1} transition, which is pumped by collisional excitation combined with self-photopumping, for what is to our knowledge the first time. {copyright} {ital 1999} {ital Optical Society of America}

• Research Organization: Lawrence Livermore National Laboratory
• DOE Contract Number: W-7405-ENG-48
• OSTI ID: 302894
• Journal Information: Optics Letters, Journal Name: Optics Letters Journal Issue: 2 Vol. 24; ISSN 0146-9592; ISSN OPLEDP
• Country of Publication: United States
• Language: English

Related Subjects

42 ENGINEERING
EXCITATION
GAIN
ISOELECTRONIC ATOMS
MOLYBDENUM
NIOBIUM
OPTICAL PUMPING
TRANSIENTS
X-RAY LASERS
YTTRIUM
ZIRCONIUM