Excitation of sodium atoms by 330-nm laser pulses |
| |
Authors: | T Stacewicz NA Gorbunov P Kozłowski |
| |
Institution: | (1) Institute of Experimental Physics, Warsaw University, ul. Hoża 69, 00-681 Warsaw, Poland (Fax: +48-22/621 09 85, E-mail: tadstac@fuw.edu.pl), PL;(2) Physics Institute, St. Petersburg State University, Ulianovskaya 1, 198904 St. Petersburg, Russia, RU |
| |
Abstract: | 1/2 ) atoms in a dense sodium vapour irradiated by nanosecond laser pulses tuned near the 3S→4P transition was investigated. It
was observed that the population of Na(4P) atoms remained high only within the laser pulse, in spite of the relatively long
lifetime of the 4P level (110.ns)The 3P1/2 level, which is populated as a result of cascade transitions from the higher levels, reached the highest population several
nanoseconds after the laser shot. The fast population changes are explained by cascade-stimulated transitions between the
excited atomic levels.
Received: 16 July 1997/Revised version: 27 October 1997 |
| |
Keywords: | PACS: 32 80 Wr 34 80 Dp 46 65 Ky |
本文献已被 SpringerLink 等数据库收录! |
|