A high brightness laser-cooled atomic beam for application in high resolution FIB

S.H.W. Wouters, S.B. Geer, van der, G. Haaf, ten, Bart Jansen, P.H.A. Mutsaers

Research output: Chapter in Book/Report/Conference proceedingConference contributionAcademic

Abstract

A new type of high-brightness ion source is under development which employs transverse laser cooling and compression of a thermal atomic rubidium beam, followed by in-field photo-ionization. When attached to a focusing column, this Focused Ion Beam (FIB) has the advantage of supplying a higher current in a smaller spot compared to conventional LMIS-based FIBs, thus increasing both the resolution and the speed of the FIB. Furthermore, different types of ion species can be used, broadening the range of applications of the FIB. Simulations using a 10 cm long laser cooling and compression stage and a realistic ionization and acceleration structure, predict an achievable brightness for 87 Rb + of order 10 7 A/m 2 sr eV at an energy spread of less than 1 eV and a current of tens of pA. This would lead to a spot size below 5 nm. Simulations and modeling on the ionization process have led to a better understanding of stochastic heating. Experimental realization of the compact ion source has recently started with the development of an efficient high-flux atom source and a 2D laser cooler and compressor. Progress on simulations and experimental results will be reported.
Original languageEnglish
Title of host publication2013 Joint Meeting of the APS Division of Atomic, Molecular & Optical Physics and the CAP Division of Atomic, Molecular & Optical Physics, Canada
PublisherAmerican Physical Society
Publication statusPublished - 2013
Event2013 Joint Meeting of the APS Division of Atomic, Molecular and Optical Physics (DAMOP) and the CAP Division of Atomic, Molecular and Optical Physics, Canada (DAMOPC), June 3-7, 2013, Quebec City, Canada - Quebec City, Canada
Duration: 3 Jun 20137 Jun 2013
https://www.aps.org/units/damop/meetings/meeting.cfm?name=DAMOP13

Publication series

NameBulletin of the American Physical Society
Volume58
ISSN (Print)0003-0503

Conference

Conference2013 Joint Meeting of the APS Division of Atomic, Molecular and Optical Physics (DAMOP) and the CAP Division of Atomic, Molecular and Optical Physics, Canada (DAMOPC), June 3-7, 2013, Quebec City, Canada
CountryCanada
CityQuebec City
Period3/06/137/06/13
Other
Internet address

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