Bogdan A R, Downer M W, Bloembergen N
Division of Applied Sciences, Harvard University, Cambridge, Massachusetts 02138, USA.
Opt Lett. 1981 Jul 1;6(7):348-50. doi: 10.1364/ol.6.000348.
The linewidth and intensity of the four-wave degenerate mixing signal in Na vapor have been observed as functions of He buffer-gas pressure with cw single-mode dye-laser beams. The width is independent of He pressure, and a quantitative comparison with theory is made. We also report the observation of a new effect, a four-wave mixing Raman-type resonance between two equally populated hyperfine levels.
利用连续单模染料激光束，观测了钠蒸汽中四波简并混频信号的线宽和强度与氦缓冲气体压力的函数关系。线宽与氦压力无关，并与理论进行了定量比较。我们还报告了一种新效应的观测结果，即在两个等量占据的超精细能级之间的四波混频拉曼型共振。
