Doppler-free intermodulated fluorescence spectroscopy of ${}^{4}He$ $2^{3}P-3^{1,3}D$ transitions at 588 nm with a one-watt compact laser system

Pei-Ling Luo, Jinmeng Hu, Yan Feng +2

We have demonstrated Doppler-free intermodulated fluorescence spectroscopy of helium $2^{3}P-3^{1,3}D$ transitions in an rf discharged sealed-off cell using a compact laser system at…