Simulations of ASE and seeded transient x-ray lasers using the COLAX code

Annie Klisnick; Olivier Larroche; François de Dortan; Jamil Habib; Olivier Guilbaud

doi:10.1117/12.825511

28 September 2009 Simulations of ASE and seeded transient x-ray lasers using the COLAX code

Annie Klisnick, Olivier Larroche, François de Dortan, Jamil Habib, Olivier Guilbaud

Proceedings Volume 7451, Soft X-Ray Lasers and Applications VIII; 74510U (2009) https://doi.org/10.1117/12.825511
Event: SPIE Optical Engineering + Applications, 2009, San Diego, California, United States

Abstract

We present recent calculations performed with the Maxwell-Bloch COLAX code. We investigate several features of transient X-ray lasers pumped with grazing incidence geometry and operated either with or without seeding by a highorder harmonics pulse. We show that the spontaneous emission source term included in the code accounts well for the speckle patterns observed in near-field and far-field images of the amplification of spontaneous emission (ASE) beams. Our calculations confirm the predictions of a simpler model based on the properties of spatial and temporal coherence of the source. We study the role of varying the level of the harmonic pulse seeded in the X-ray laser plasma. We show that the amplification factor and the contrast with respect to the ASE background cannot be maximized simultaneously. Finally we describe a recent upgrade of the code in which a time-dependent description of the populations of the lasing states has been implemented. This more rigorous treatment allows us to investigate the small-scale temporal behaviour of seeded X-ray lasers. The new version of the COLAX code was recently tested and preliminary results will be presented.

Citation Download Citation

Annie Klisnick, Olivier Larroche, François de Dortan, Jamil Habib, and Olivier Guilbaud "Simulations of ASE and seeded transient x-ray lasers using the COLAX code", Proc. SPIE 7451, Soft X-Ray Lasers and Applications VIII, 74510U (28 September 2009); https://doi.org/10.1117/12.825511

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available