Near quantum-noise limited and absolute frequency stabilized 1083 nm single-frequency fiber laser

被引：20
|
作者：
Zhao, Qilai [1 ,2 ]
Zhou, Kaijun [1 ,2 ]
Wu, Zisheng [1 ,2 ]
Yang, Changsheng [1 ,2 ]
Feng, Zhouming [1 ,2 ,3 ,4 ]
Cheng, Huihui [1 ,2 ]
Gan, Jiulin [1 ,2 ]
Peng, Mingying [1 ,2 ,3 ,4 ]
Yang, Zhongmin [1 ,2 ,3 ,4 ]
Xu, Shanhui [1 ,2 ]
机构：
[1] South China Univ Technol, State Key Lab Luminescent Mat & Devices, Guangzhou 510640, Guangdong, Peoples R China
[2] South China Univ Technol, Inst Opt Commun Mat, Guangzhou 510640, Guangdong, Peoples R China
[3] Guangdong Engn Technol Res & Dev Ctr Special Opt, Guangzhou 510640, Guangdong, Peoples R China
[4] South China Univ Technol, Guangdong Prov Key Lab Fiber Laser Mat & Appl Tec, Guangzhou 510640, Guangdong, Peoples R China
来源：
OPTICS LETTERS | 2018年 / 43卷 / 01期
基金：
中国国家自然科学基金;
关键词：
EARTHS MAGNETIC-FIELD; CAVITY;
D O I：
10.1364/OL.43.000042
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
The Earth's magnetic field has significant effects that protect us from cosmic radiation and provide navigation for biological migration. However, slow temporal variations originating in the liquid outer core invariably exist. To understand the working mechanism of the geomagnetic field and improve accuracy of navigation systems, a high-precision magnetometer is essential to measure the absolute magnetic field. A helium optically pumping magnetometer is an advanced approach, but its sensitivity and accuracy are directly limited by the low-frequency relative intensity noise and frequency stability characteristics of a light source. Here, we demonstrate a near quantum-noise limited and absolute frequency stabilized 1083 nm single-frequency fiber laser. The relative intensity noise is only 5 dB higher than the quantum-noise limit, and the root mean square of frequency fluctuation is similar to 17 kHz after locked. This fiber laser could suppress the fluctuation of magnetic resonant frequency and improve the signal-to-noise ratio of the magnetic resonance signal detection. (C) 2017 Optical Society of America
引用
收藏
页码：42 / 45
页数：4
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