Non-crossover sub-Doppler DAVLL in selective reflection scheme

Zhang Lin-Jie^{1, 2}, Zhang Hao^{1, 2}, Zhao Yan-Ting^{1, 2, †}, Xiao Lian-Tuan^{1, 2}, Jia Suo-Tang^{1, 2}

Schematic diagram of sub-Doppler DAVLL signals of selective reflection in atomic rubidium. ECDL: external cavity diode laser; SAS: saturated absorption spectroscopy; PBS: polarizing beam splitter; FRS: frequency reference signal; PD: photodiode detector; DA: differential amplifier.