Fringe formation and coherence of a soft-x-ray laser beam illuminating a Mach--Zehnder interferometer

Journal Article · Fri Sep 15 00:00:00 EDT 1995 · Optics Letters

DOI:https://doi.org/10.1364/OL.20.001907· OSTI ID:118408

Celliers, P; Weber, F; Da Silva, L B; Barbee, Jr, T W; Cauble, R; Wan, A S; Moreno, J C ^[1]

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1. Lawrence Livermore National Laboratory, University of California, Livermore, California 94550 (United States)

We investigated the fringe visibility produced by a Mach--Zehnder interferometer illuminated by a collisionally pumped yttrium x-ray laser operating at 15.5 nm. Fringe visibility varied as a function both of relative path delay and of relative spatial overlap of the beams. This visibility information was extracted quantitatively from several interferograms and analyzed to produce a characterization of the temporal coherence, yielding a gain-narrowed linewidth of 1.3 pm for the 15.5-nm laser transition and spatial coherence consistent with an effective source size of {approx}220{mu}m{plus_minus}50% at the x-ray laser output. {copyright} 1995 Optical Society of America

• Research Organization: Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
• Sponsoring Organization: USDOE
• DOE Contract Number: W-7405-ENG-48
• OSTI ID: 118408
• Journal Information: Optics Letters, Vol. 20, Issue 18; Other Information: PBD: 15 Sep 1995
• Country of Publication: United States
• Language: English

Related Subjects

42 ENGINEERING NOT INCLUDED IN OTHER CATEGORIES
X RADIATION
INTERFEROMETRY
COHERENT RADIATION
VISIBILITY
X-RAY LASERS