Abstract

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 (${\lesssim} 15\;{\rm 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 µm region, while orientation-patterned gallium phosphide provides coverage across 7–11 µm. Cascaded second-order nonlinearities simultaneously provide access to the carrier–envelope-offset frequency of the pump source via in-line $f {\text -} {2\!f}$ 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.

© 2020 Optical Society of America

Full Article  |  PDF Article
OSA Recommended Articles
Octave mid-infrared optical frequency comb from Er:fiber-laser-pumped aperiodically poled Mg: LiNbO3

Lian Zhou, Yang Liu, Haipeng Lou, Yuanfeng Di, Gehui Xie, Zhiwei Zhu, Zejiang Deng, Daping Luo, Chenglin Gu, Huaixi Chen, and Wenxue Li
Opt. Lett. 45(23) 6458-6461 (2020)

Intensity noise optimization of a mid-infrared frequency comb difference-frequency generation source

Vinicius Silva de Oliveira, Axel Ruehl, Piotr Masłowski, and Ingmar Hartl
Opt. Lett. 45(7) 1914-1917 (2020)

Mid-infrared frequency comb generation via cascaded quadratic nonlinearities in quasi-phase-matched waveguides

Abijith S. Kowligy, Alex Lind, Daniel D. Hickstein, David R. Carlson, Henry Timmers, Nima Nader, Flavio C. Cruz, Gabriel Ycas, Scott B. Papp, and Scott A. Diddams
Opt. Lett. 43(8) 1678-1681 (2018)

References

You do not have subscription access to this journal. Citation lists with outbound citation links are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription

Cited By

You do not have subscription access to this journal. Cited by links are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription

Figures (4)

You do not have subscription access to this journal. Figure files are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription

Metrics

You do not have subscription access to this journal. Article level metrics are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription