Almost all the atoms in the hyperfine sublevel F=4,m_(F)=0("clock level")of cesium ground state have been pumped out by using a laser diode tuned on the Cs-D2 line;and 15.2%population difference(|δoo|)which...Almost all the atoms in the hyperfine sublevel F=4,m_(F)=0("clock level")of cesium ground state have been pumped out by using a laser diode tuned on the Cs-D2 line;and 15.2%population difference(|δoo|)which is more than two times better than what the traditional magnetical selecting state method could provide is found.This experimental result can be applied into building an optically pumped Cs beam frequency standard and better performance will be expected.展开更多
The microwave transition between two ground hyperfine sublevels of Cs atom has been observed by optidal pumping and optical detecting.The maximum population difference between"0-0"sublevels in single laser p...The microwave transition between two ground hyperfine sublevels of Cs atom has been observed by optidal pumping and optical detecting.The maximum population difference between"0-0"sublevels in single laser pumping case is achieved.The"Ramsey pattern"of"0-0"clock level transition and"Rabi"transition structures are obtained,and their main characters agree with the theoretical results.A better Cs beam atomic clock performance would be expected when the inject microwave frequency is locked into the center of the"0-0"clock level transition"in this experimental setup.展开更多
文摘Almost all the atoms in the hyperfine sublevel F=4,m_(F)=0("clock level")of cesium ground state have been pumped out by using a laser diode tuned on the Cs-D2 line;and 15.2%population difference(|δoo|)which is more than two times better than what the traditional magnetical selecting state method could provide is found.This experimental result can be applied into building an optically pumped Cs beam frequency standard and better performance will be expected.
文摘The microwave transition between two ground hyperfine sublevels of Cs atom has been observed by optidal pumping and optical detecting.The maximum population difference between"0-0"sublevels in single laser pumping case is achieved.The"Ramsey pattern"of"0-0"clock level transition and"Rabi"transition structures are obtained,and their main characters agree with the theoretical results.A better Cs beam atomic clock performance would be expected when the inject microwave frequency is locked into the center of the"0-0"clock level transition"in this experimental setup.
