Broad bandwidth interference filter-stabilized external cavity diode laser with narrow linewidth below 100 kHz<xref rid="cpb_27_1_014204_fn1" ref-type="fn">*</xref> <fn id="cpb_27_1_014204_fn1"> <label>*</label> <p>Project supported by the Foundation of Based Technology of China (Grant No. YXBGD20151JL01), the National Natural Science Foundation of China (Grant Nos. 61376049, 61604007, 11674016, 61378058, 61575008, and 61574011), the Natural Science Foundation of Beijing City, China (Grant Nos. 4172009 and 4152003), and the Beijing Municipal Commission of Education of China (Grant Nos. PXM2017_014204_500034 and PXM2016_014204

Broad bandwidth interference filter-stabilized external cavity diode laser with narrow linewidth below 100 kHz* *

Project supported by the Foundation of Based Technology of China (Grant No. YXBGD20151JL01), the National Natural Science Foundation of China (Grant Nos. 61376049, 61604007, 11674016, 61378058, 61575008, and 61574011), the Natural Science Foundation of Beijing City, China (Grant Nos. 4172009 and 4152003), and the Beijing Municipal Commission of Education of China (Grant Nos. PXM2017_014204_500034 and PXM2016_014204_500018).

Pan Guan-Zhong, Guan Bao-Lu^†, Xu Chen^‡, Li Peng-Tao, Yang Jia-Wei, Liu Zhen-Yang

(color online) The Cs 6²S_1/2(F = 4) → 6²S_3/2(F′ = 3,4,5) saturated absorption spectrum with Doppler background.