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| Content Provider | IEEE Xplore Digital Library |
|---|---|
| Author | Guangjiong Dong Weiping Lu Barker, P.F. Shneider, M.N. |
| Copyright Year | 2003 |
| Description | Author affiliation: Sch. of Eng. & Phys. Sci., Heriot-Watt Univ., Edinburgh, UK (Guangjiong Dong; Weiping Lu; Barker, P.F.) |
| Abstract | This work presents the proposed schemes for decelerating cold molecules created in pulsed supersonic expansions using pulsed optical lattices. The first scheme relies on the application of a decelerating optical lattice with a dipole-potential well depth of approximately 1 K, created by rapidly chirping medium-intensity fields in the 10 W/cm/sup 2/ range. This scheme is an optical analog of the Start decelerator that has been successfully used to slow a range of polar molecules. A significant fraction (about 10%) of the very heavy I/sub 2 /molecules in an Ar buffer gas is shown to be slowed by using this method over sub-microsecond time scales. In the second technique, an optical lattice with larger well depth in the 100 K range travelling at half the supersonic beam velocity is used to trap a significant fraction of the cold, high-velocity molecules. This technique is developed based on the property of periodic motion of the trapped molecules in the optical lattice; the molecules reverse their initial (relative) velocities in the lattice reference frame after half a period. Using this method the cold molecules can be transferred from high speed to zero velocity on nanosecond time scales. As an example, 33% of a CO molecule beam (1 K) with a velocity of 230 m/s is slowed utilising optical intensities of less than 10/sup 12/ W/cm/sup 2/. |
| File Size | 88669 |
| File Format | |
| ISBN | 0780377338 |
| DOI | 10.1109/EQEC.2003.1314159 |
| Language | English |
| Publisher | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Publisher Date | 2003-06-22 |
| Publisher Place | Germany |
| Access Restriction | Subscribed |
| Rights Holder | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Subject Keyword | Optical pulses Lattices Optical buffering High speed optical techniques Electronics cooling Chirp Charge carrier processes Laser beams Space technology Ionization |
| Content Type | Text |
| Resource Type | Article |
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