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Journal of the Optical Society of America B

Journal of the Optical Society of America B

| OPTICAL PHYSICS

  • Vol. 17, Iss. 3 — Mar. 1, 2000
  • pp: 481–486

Investigation of the gain anomaly of lithiumlike ion 3d–4f and 3d–5f lasers in a recombining silicon plasma

Ruxin Li, Zhengquan Zhang, Pinzhong Fan, and Zhizhan Xu  »View Author Affiliations


JOSA B, Vol. 17, Issue 3, pp. 481-486 (2000)
http://dx.doi.org/10.1364/JOSAB.17.000481


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Abstract

We report an experimental investigation of the gain anomaly of lithiumlike 3d–4f and 3d–5f lasers in a recombining silicon plasma. We examined the spatial distribution of gain coefficients of the two lasing lines and found that the peak gain of the 3d–5f laser occurs closer to the target surface than that of the 3d–4f laser, which is contrary to the results predicted by simulation. This discrepancy, which to our knowledge was not pointed out before, was found to be relevant to the gain anomaly of lithiumlike-ion 3d–4f and 3d–5f lasers. A small prepulse was introduced to modify the state of a silicon plasma column with which the spontaneous-emission amplification of lithiumlike silicon ion 3d–4f and 3d–5f transitions was observed. The prepulse-induced behaviors were quite different for the two lines. These results suggest that the sensitivity of the gain of the 3d–4f laser to the plasma density and the population of the 3d level tends to reduce the difference in laser gain between the 3d–4f and 3d–5f transitions predicted by standard atomic physics codes.

© 2000 Optical Society of America

OCIS Codes
(140.7240) Lasers and laser optics : UV, EUV, and X-ray lasers

Citation
Ruxin Li, Zhengquan Zhang, Pinzhong Fan, and Zhizhan Xu, "Investigation of the gain anomaly of lithiumlike ion 3d–4f and 3d–5f lasers in a recombining silicon plasma," J. Opt. Soc. Am. B 17, 481-486 (2000)
http://www.opticsinfobase.org/josab/abstract.cfm?URI=josab-17-3-481

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