Doppler_laser_cooling.svg
Size of this PNG preview of this SVG file:
240 × 600 pixels
.
Other resolutions:
96 × 240 pixels
|
192 × 480 pixels
|
307 × 768 pixels
|
409 × 1,024 pixels
|
819 × 2,048 pixels
|
512 × 1,280 pixels
.
Summary
Description Doppler laser cooling.svg |
English:
Simplified principle of Doppler laser cooling:
(1) A stationary atom sees the laser neither red- nor blue-shifted and does not absorb the photon. (2) An atom moving away from the laser sees it red-shifted and does not absorb the photon. (3.1) An atom moving towards the laser sees it blue-shifted and absorbs the photon, slowing the atom. (3.2) The photon excites the atom, moving an electron to a higher quantum state. (3.3) The atom re-emits a photon. As its direction is random, there is no net change in momentum over many atoms. |
Source | Own work |
Author | Cmglee |
Licensing
I, the copyright holder of this work, hereby publish it under the following licenses:
This file is licensed under the
Creative Commons
Attribution-Share Alike 3.0 Unported
license.
-
You are free:
- to share – to copy, distribute and transmit the work
- to remix – to adapt the work
-
Under the following conditions:
- attribution – You must give appropriate credit, provide a link to the license, and indicate if changes were made. You may do so in any reasonable manner, but not in any way that suggests the licensor endorses you or your use.
- share alike – If you remix, transform, or build upon the material, you must distribute your contributions under the same or compatible license as the original.
Permission is granted to copy, distribute and/or modify this document under the terms of the GNU Free Documentation License , Version 1.2 or any later version published by the Free Software Foundation ; with no Invariant Sections, no Front-Cover Texts, and no Back-Cover Texts. A copy of the license is included in the section entitled GNU Free Documentation License . http://www.gnu.org/copyleft/fdl.html GFDL GNU Free Documentation License true true |
You may select the license of your choice.