【摘要】 用一个近共振的染料激光束照射钠蒸气后,我们观察到一个角锥型辐射。实验中钠原子密度约为10¹⁴原子数/厘米³,激光波长调谐在D₁或D₃线短波边。这一角锥辐射的空间、光谱和偏振特性得到了测量。测量结果与在钡蒸气中的类似实验作了比较。更多还原

【Abstract】 We have observed a conical emission from sodium vapor (N-1014cm-3) illuminated by a near-resonant dye laser (detuning on the short-wavelength side of D1 or D2 line). Spatial, spectral and polarization characteristics of this emission have been measured.The results are compared with the experiments using barium vapor.更多还原