Compact and ultrastable photonic microwave oscillator

被引：24

作者：

Giunta, Michele ^{[1
,2
]}

Yu, Jialiang ^{[1
,5
]}

Lessing, Maurice ^{[1
]}

Fischer, Marc ^{[1
]}

Lezius, Matthias ^{[1
]}

Xie, Xiaopeng ^{[3
,6
]}

Santarelli, Giorgio ^{[4
]}

Le Coq, Yann ^{[3
]}

Holzwarth, Ronald ^{[1
,2
]}

机构：

[1] Menlo Syst GmbH, Klopferspitz 19a, D-82152 Martinsried, Germany

[2] Max Planck Inst Quantum Opt, D-85748 Garching, Germany

[3] Sorbonne Univ, CNRS, Univ PSL, LNE SYRTE,Observ Paris, 61 Ave Observ, F-75014 Paris, France

[4] Univ Bordeaux, CNRS, IOGS, LP2N, Rue F Mitterand, F-33400 Talence, France

[5] PTB, D-38116 Braunschweig, Germany

[6] Peking Univ, Dept Elect, State Key Lab Adv Opt Commun Syst & Networks, Beijing 100871, Peoples R China

来源：

OPTICS LETTERS | 2020年 / 45卷 / 05期

关键词：

NOISE; LASERS; PHOTODETECTION; CAVITY;

D O I：

10.1364/OL.385503

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

Frequency comb synthesized microwaves have been so far realized with tabletop systems, operated in well-controlled environments. Here, we demonstrate state-of-the-art ultrastable microwave synthesis with a compact rack-mountable apparatus. We present absolute phase noise characterization of a 12 GHz signal using an ultrastable laser at similar to 194 THz and an Er:fiber comb divider, obtaining -83 dBc/Hz at 1 Hz and < -166 dBc/Hz for offsets greater than 5 kHz. Employing semiconductor coating mirrors for the same type of transportable optical frequency reference, we show that -105 dBc/Hz at 1 Hz is supported by demonstrating a residual noise limit of division and detection process of -115 dBc/Hz at 1 Hz. This level of fidelity paves the way for the deployment of ultrastable photonic microwave oscillators and for operating transportable optical clocks. (C) 2020 Optical Society of America

引用

页码：1140 / 1143

页数：4

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