title: Electro-optic modulator with ultra-low residual amplitude modulation for frequency modulation and laser stabilization.
abstract: The reduction of the residual amplitude modulation (RAM) induced by electro-optic modulation is essential for many applications of frequency modulation spectroscopy requiring a lower system noise floor. Here, we demonstrate a simple passive approach employing an electro-optic modulator (EOM) cut at Brewster's angle. The proposed EOM exhibits a RAM of a few parts per million, which is comparable with that achieved by a common EOM under critical active temperature and bias voltage controls. The frequency instability of a 10 cm cavity-stabilized laser induced by the RAM effect of the proposed EOM is below 3×10-17for integration times from 1 to 1000 s, and below 4×10-16for comprehensive noise contributions for integration times from 1 to 100 s.
authors.forename: Zhaoyang
authors.initials: Z
authors.lastname: Tai
authors.forename: Lulu
authors.initials: L
authors.lastname: Yan
authors.forename: Yanyan
authors.initials: Y
authors.lastname: Zhang
authors.forename: Xiaofei
authors.initials: X
authors.lastname: Zhang
authors.forename: Wenge
authors.initials: W
authors.lastname: Guo
authors.forename: Shougang
authors.initials: S
authors.lastname: Zhang
authors.forename: Haifeng
authors.initials: H
authors.lastname: Jiang