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Improved beam characteristics of solid-target son x-ray laser amplifiers by injection seeding with high harmonic pulses
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2010 (English)In: Optics Letters, ISSN 0146-9592, E-ISSN 1539-4794, Vol. 35, no 14, 2317-2319 p.Article in journal (Refereed) Published
Abstract [en]

Injection seeding of solid-target soft x-ray laser amplifiers with high harmonic pulses is shown to dramatically improve the far-field laser beam profile and reduce the beam divergence. Measurements and two-dimensional simulations for a 13.9 nm nickel-like Ag amplifier show that the amplified beam divergence depends strongly on the seed and can therefore be controlled by selecting the divergence of the seed. The near-field beam size of both the seeded and unseeded lasers is shown to be determined by the size of the gain region and the divergence of the amplified beams.

Place, publisher, year, edition, pages
Optical Society of America, 2010. Vol. 35, no 14, 2317-2319 p.
National Category
Atom and Molecular Physics and Optics
Identifiers
URN: urn:nbn:se:kth:diva-85956DOI: 10.1364/OL.35.002317ISI: 000279994400001PubMedID: 20634815OAI: oai:DiVA.org:kth-85956DiVA: diva2:500284
Note
QC 20120217Available from: 2012-02-13 Created: 2012-02-13 Last updated: 2017-12-07Bibliographically approved
In thesis
1. DEVELOPMENT OF A HIGH ENERGY TI:SAPPHIRE LASER FOR THE EXCITATION OF EXTREME ULTRAVIOLET LASERS
Open this publication in new window or tab >>DEVELOPMENT OF A HIGH ENERGY TI:SAPPHIRE LASER FOR THE EXCITATION OF EXTREME ULTRAVIOLET LASERS
2010 (English)Doctoral thesis, comprehensive summary (Other academic)
Abstract [en]

This dissertation describes the design, construction and characterization of a high energy chirped-pulse amplification Titanium-Sapphire laser system for the excitation of Extreme Ultraviolet (EUV) lasers. Compact EUV lasers have made possible nano-scale imaging, dense plasma diagnostics and photo-chemistry and photo-physics studies. They also have the potential to make possible a variety of new studies of surfaces and materials and enable the development of unique metrology and processing tools for industry. The components developed to realize high energy operation of the Titanium-Sapphire laser include the development of a Nd:Glass zig-zag slab pump laser and novel 800 nm multi-layer dielectric diffraction gratings for picosecond compression.

The Titanium-Sapphire laser was used to pump several table-top EUV lasers. Increased average power operation of a 13.9 nm nickel-like silver laser generating 20 ?W was demonstrated. This is the highest average power obtained from a compact EUV laser to date. Injection seeding of the 13.9 nm EUV amplifier produced laser beams with greatly improved beam characteristics which includes a large reduction in beam divergence and a near Gaussian far-field profile. The laser was also used to pump a gain-saturated table-top laser at 10.9 nm in nickel-like tellurium.

Place, publisher, year, edition, pages
ProQuest/UMI, 2010. 176 p.
National Category
Atom and Molecular Physics and Optics
Research subject
SRA - E-Science (SeRC)
Identifiers
urn:nbn:se:kth:diva-86034 (URN)
Public defence
2010-12-17, Fort Collins, 10:00 (English)
Supervisors
Funder
Swedish e‐Science Research Center
Note
QC 20120213Available from: 2012-02-14 Created: 2012-02-13 Last updated: 2012-02-14Bibliographically approved

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