Time/frequency-domain characterization of a mid-IR DFG frequency comb via two-photon and heterodyne detection-Reference-Cited by-同舟云学术

Time/frequency-domain characterization of a mid-IR DFG frequency comb via two-photon and heterodyne detection

Published:2023-10-06 Issue:21 Volume:31 Page:35330
ISSN:1094-4087
Container-title:Optics Express
language:en
Short-container-title:Opt. Express

Author:

Gabbrielli Tecla¹^ORCID,Insero Giacomo²³,De Regis Michele¹²,Corrias Nicola¹²⁴^ORCID,Galli Iacopo¹⁵,Mazzotti Davide¹⁵^ORCID,Bartolini Paolo¹,Hyun Huh Jeong⁶,Cleff Carsten⁶,Kastner Alexander⁶,Holzwarth Ronald⁶,Borri Simone¹⁷^ORCID,Consolino Luigi¹^ORCID,De Natale Paolo¹²⁷^ORCID,Cappelli Francesco¹^ORCID

Affiliation:

1. LENS – European Laboratory for Non-Linear Spectroscopy

2. CNR-INO – Istituto Nazionale di Ottica

3. University of Florence

4. QTI S.r.l.

5. ppqSense S.r.l.

6. Menlo Systems GmbH

7. INFN – Istituto Nazionale di Fisica Nucleare

Abstract

Mid-infrared frequency combs are nowadays well-appreciated sources for spectroscopy and frequency metrology. Here, a comprehensive approach for characterizing a difference-frequency-generated mid-infrared frequency comb (DFG-comb) both in the time and in the frequency domain is presented. An autocorrelation scheme exploiting mid-infrared two-photon detection is used for characterizing the pulse width and to verify the optimal compression of the generated pulses reaching a pulse duration (FWHM) as low as 196 fs. A second scheme based on mid-infrared heterodyne detection employing two independent narrow-linewidth quantum cascade lasers (QCLs) is used for frequency-narrowing the modes of the DFG-comb down to 9.4 kHz on a 5-ms timescale.

Funder

European Union

QuantERA

Horizon Europe Framework Programme

Horizon 2020 Framework Programme

Italian ESFRI Roadmap

Fondazione Cassa di Risparmio di Firenze

Publisher

Optica Publishing Group

Subject

Atomic and Molecular Physics, and Optics

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