Mid-infrared fibre-based optical comb

被引：60

作者：

Maddaloni, P.

Malara, P.

Gagliardi, G.

De Natale, P.

机构：

[1] CNR, Ist Nazl Ott Applicata, I-80078 Naples, Italy

[2] European Lab Nonlinear Spectroscopy Comprensorio, I-80078 Naples, Italy

来源：

NEW JOURNAL OF PHYSICS | 2006年 / 8卷

关键词：

D O I：

10.1088/1367-2630/8/11/262

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

An optical frequency synthesizer (OFS), based on difference-frequency generation (DFG), is demonstrated at 3 mu m. By mixing a near-infrared (IR) OFS and a tunable continuous-wave (CW) laser in a periodically poled lithium-niobate (PPLN) crystal, a new comb is created from 2.9 to 3.5 mu m (in 180 nm wide spans) with a 100 MHz mode spacing. By phase-locking, the pump laser to the near-IR OFS, the mid-IR comb is directly linked to the Cs primary standard via a global positioning system (GPS) time receiver. Then, the compactness of our fibre-based set-up opens real perspectives for the realization of transportable mid-IR frequency standards.

引用

页数：8

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