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Optics Letters

Optics Letters

| RAPID, SHORT PUBLICATIONS ON THE LATEST IN OPTICAL DISCOVERIES

  • Vol. 24, Iss. 2 — Jan. 15, 1999
  • pp: 101–103

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

James Dunn, Joseph Nilsen, Albert L. Osterheld, Yuelin Li, and Vyacheslav N. Shlyaptsev  »View Author Affiliations


Optics Letters, Vol. 24, Issue 2, pp. 101-103 (1999)
http://dx.doi.org/10.1364/OL.24.000101


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Abstract

We demonstrate strong lasing on the Ni-like 4<i>d</i><sup>1</sup><i>S</i><sub>0</sub>→4<i>p</i><sup>1</sup><i>P</i><sub>1</sub> transition at 18.9, 20.3, 22.0, and 24.0 nm for Mo, Nb, Zr, and Y ions, respectively, using the transient collisional excitation scheme. Approximately 5 J 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 17–26cm <sup>-1</sup> are determined on the 4<i>d</i>→4<i>p</i> transition, with overall gain–length products <i>gL</i> of 11–12. Lasing is observed and gain is measured on the 4<i>f</i><sup>1</sup><i>P</i><sub>1</sub>→4<i>d</i><sup>1</sup><i>P</i><sub>1</sub> transition, which is pumped by collisional excitation combined with self-photopumping, for what is to our knowledge the first time.

© 1999 Optical Society of America

OCIS Codes
(140.7090) Lasers and laser optics : Ultrafast lasers
(140.7240) Lasers and laser optics : UV, EUV, and X-ray lasers
(320.5390) Ultrafast optics : Picosecond phenomena
(340.7480) X-ray optics : X-rays, soft x-rays, extreme ultraviolet (EUV)
(350.5400) Other areas of optics : Plasmas

Citation
James Dunn, Joseph Nilsen, Albert L. Osterheld, Yuelin Li, and Vyacheslav N. Shlyaptsev, "Demonstration of transient gain x-ray lasers near 20nm for nickellike yttrium, zirconium, niobium, and molybdenum," Opt. Lett. 24, 101-103 (1999)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-24-2-101

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