Keywords Cesium atom;Electromagnetically induced coherent media;Electromagnetically induced transparency and electromagnetically induced absorption;Subluminal and superluminal;Sub-Doppler spectroscop

• 铯原子;电磁诱导相干介质;电磁诱导透明和电磁诱导吸收;慢光速和超光速;亚多普勒光谱;