Mid-Infrared frequency combs a 10 GHz

被引：35

作者：

Kowligy, Abijith S. ^{[1
,2
]}

Carlson, David R. ^{[1
]}

Hickstein, Daniel D. ^{[1
]}

Timmers, Henry ^{[1
]}

Lind, Alexander J. ^{[1
,2
]}

Schunemann, Peter G. ^{[3
]}

Papp, Scott B. ^{[1
,2
]}

Diddams, Scott A. ^{[1
,2
]}

机构：

[1] NIST, Time & Frequency Div, Boulder, CO 80305 USA

[2] Univ Colorado, Dept Phys, Boulder, CO 80309 USA

[3] BAE Syst, Nashua, NH 03060 USA

来源：

OPTICS LETTERS | 2020年 / 45卷 / 13期

关键词：

MU-M; GENERATION; SPECTROSCOPY; PULSES; LASER;

D O I：

10.1364/OL.391651

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

We demonstrate mid-infrared (MIR) frequency combs at 10 GHz repetition rate via intra-pulse difference-frequency generation (DFG) in quasi-phase-matched nonlinear media. Few-cycle pump pulses (less than or similar to 15 fs, 100 pJ) from a near-infrared electro-optic frequency comb are provided via nonlinear soliton-like compression in photonic-chip silicon-nitride waveguides. Subsequent intra-pulse DFG in periodically poled lithium niobate waveguides yields MIR frequency combs in the 3.1-4.8 mu m region, while orientation-patterned gallium phosphide provides coverage across 7-11 mu m. Cascaded second-order nonlinearities simultaneously provide access to the carrier-envelope-offset frequency of the pump source via in-line f-2f nonlinear interferometry. The high-repetition rate MIR frequency combs introduced here can be used for condensed phase spectroscopy and applications such as laser heterodyne radiometry. (C) 2020 Optical Society of America

引用

页码：3677 / 3680

页数：4

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