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}

(a) The error signal with and without feedback from a DAVLL selective reflection spectra for the transition F = 3 → F ′ = 4 of ⁸⁵Rb D₂ line. (b) Square root of Allan variance with and without locking for the laser frequency.