COHERENCE AND DOUBLE-PASS AMPLIFICATION IN GE SOFT-X-RAY LASER

Y. Kato, M. Yamanaka, H. Daido, H. Shiraga, H. Azuma, K. Murai, G. Yuan, E. Miura, T. Kanabe, M. Takagi, S. Nakai, Ciaran Lewis, D.M. Oneill, D. Neely, M. Niibe, N. Tsukamoto, Y. Fukuda

Research output: Contribution to journalArticlepeer-review

45 Citations (Scopus)

Abstract

From measurements of spatial coherence and beam divergence of Ge soft x-ray laser at a far field, the x-ray laser beam has been characterized as a partially coherent Gaussian beam. Double-pass amplification will improve spatial and temporal coherence, spectral brightness and efficiency. Close to 100% geometrical coupling efficiency has been obtained in double pass amplification in Ge. Transient loss of feedback is attributed to mirror structure damage within the build-up time of the x-ray laser. Prospect for generation of coherent x-ray laser beam is discussed.
Original languageEnglish
Pages (from-to)9-16
Number of pages8
JournalINSTITUTE OF PHYSICS CONFERENCE SERIES
Volume125
Publication statusPublished - 1992

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