Selection and amplification of a single optical frequency comb mode for laser cooling of the strontium atoms in an optical clock

被引：17
作者：
Liu, Hui [1 ,2 ]
Yin, Mojuan [1 ]
Kong, Dehuan [1 ]
Xu, Qinfang [1 ]
Zhang, Shougang [1 ]
Chang, Hong [1 ]
机构：
[1] Natl Time Serv Ctr, CAS Key Lab Time & Frequency Primary Stand, Xian 710600, Peoples R China
[2] Univ Chinese Acad Sci, Sch Phys, Beijing 100049, Peoples R China
来源：
APPLIED PHYSICS LETTERS | 2015年 / 107卷 / 15期
基金：
中国国家自然科学基金;
关键词：
FEMTOSECOND LASER; DIRECT LINK; INJECTION; SPECTROSCOPY;
D O I：
10.1063/1.4933259
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
In this paper, we report on the active filtering and amplification of a single mode from an optical femtosecond laser comb with mode spacing of 250MHz by optical injection of two external-cavity diode lasers operating in cascade to build a narrow linewidth laser for laser cooling of the strontium atoms in an optical lattice clock. Despite the low injection of individual comb mode of approximately 50 nW, a single comb line at 689 nm could be filtered and amplified to reach as high as 10 mW with 37 dB side mode suppression and a linewidth of 240 Hz. This method could be applied over a broad spectral band to build narrow linewidth lasers for various applications. (C) 2015 AIP Publishing LLC.
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页数：5
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