Accession Number : ADA202581

Title :   A Laser Trap for Neutral Atoms.

Descriptive Note : Final project rept. 15 Nov 85-14 Nov 87,

Corporate Author : IOWA UNIV IOWA CITY

Personal Author(s) : Stwalley, William C.

Report Date : 22 NOV 1988

Pagination or Media Count : 13

Abstract : The purpose of this project is to construct and study a laser trap for neutral atoms, initially potassium (K). At low densities, such a trap could be used to address a number of fundamental questions, e.g. the interaction of an individual atom with an electromagnetic field, collision dynamics and recombination. We have studied the feasibility and imitations of a purely laser trap concept, a 'corner cube trap', for trapping neutral K atoms. The confinement of the atoms in the two dimensions perpendicular to the laser is provided in the cavity of a newly constructed high power alexandrite laser operating in the CW TEM*01 mode ('doughnut mode') tuned slightly to the blue side of the resonance line of the K atom. By reflecting the TEM*01 laser back on itself with two mirrors, one 'caps' the ends of the cylindrical trap, resulting in a slightly weaker end plug. Keywords: Laser trap, Neutral atom trap, Multiphoton ionization, Atomic recombination. (MJM)

Descriptors :   *ATOMS, *ELECTROMAGNETIC FIELDS, *LASERS, *POTASSIUM, *TRAPS, BERYL, COLLISIONS, CONFINEMENT(GENERAL), CYLINDRICAL BODIES, DYNAMICS, GEMS(MINERALS), HIGH POWER, LOW DENSITY, MIRRORS, NEUTRAL, PHOTOIONIZATION, RESONANCE.

Subject Categories : Lasers and Masers
      Physical Chemistry

Distribution Statement : APPROVED FOR PUBLIC RELEASE