Laser frequency locking based on the normal and abnormal saturated absorption spectroscopy of <sup>87</sup>Rb

Laser frequency locking based on the normal and abnormal saturated absorption spectroscopy of ⁸⁷Rb

Wan Jian-Hong, Liu Chang, Wang Yan-Hui^†,

Spectrum (black) after subtracting two spectra and being magnified by one operational amplifier, and normal saturated absorption spectrum (red) being the same as that in Fig. 2.