Absolute spectroscopy near 7.8 μm with a comb-locked extended-cavity quantum-cascade-laser

Marco Lamperti; Bidoor Alsaif; Davide Gatti; Martin Fermann; Paolo Laporta; Aamir Farooq; Marco Marangoni

doi:10.1038/s41598-018-19188-2

Absolute spectroscopy near 7.8 μm with a comb-locked extended-cavity quantum-cascade-laser

Marco Lamperti, Bidoor Alsaif, Davide Gatti, Martin Fermann, Paolo Laporta, Aamir Farooq, Marco Marangoni

Research output: Contribution to journal › Article › peer-review

18 Scopus citations

Abstract

We report for the first time the frequency locking of an extended-cavity quantum-cascade-laser (EC-QCL) to a near-infrared frequency comb. The locked laser source is exploited to carry out molecular spectroscopy around 7.8 μm with a line-centre frequency combined uncertainty of ~63 kHz. The strength of the approach, in view of an accurate retrieval of line centre frequencies over a spectral range as large as 100 cm-1, is demonstrated on the P(40), P(18) and R(31) lines of the fundamental rovibrational band of N2O covering the centre and edges of the P and R branches. The spectrometer has the potential to be straightforwardly extended to other spectral ranges, till 12 μm, which is the current wavelength limit for commercial cw EC-QCLs.

Original language	English (US)
Journal	Scientific Reports
Volume	8
Issue number	1
DOIs	https://doi.org/10.1038/s41598-018-19188-2
State	Published - Jan 22 2018

Access to Document

10.1038/s41598-018-19188-2

https://repository.kaust.edu.sa/bitstream/10754/627001/1/s41598-018-19188-2.pdf

Cite this

@article{69f39ba59c094208af660ec94ea47ce4,

title = "Absolute spectroscopy near 7.8 μm with a comb-locked extended-cavity quantum-cascade-laser",

abstract = "We report for the first time the frequency locking of an extended-cavity quantum-cascade-laser (EC-QCL) to a near-infrared frequency comb. The locked laser source is exploited to carry out molecular spectroscopy around 7.8 μm with a line-centre frequency combined uncertainty of ~63 kHz. The strength of the approach, in view of an accurate retrieval of line centre frequencies over a spectral range as large as 100 cm-1, is demonstrated on the P(40), P(18) and R(31) lines of the fundamental rovibrational band of N2O covering the centre and edges of the P and R branches. The spectrometer has the potential to be straightforwardly extended to other spectral ranges, till 12 μm, which is the current wavelength limit for commercial cw EC-QCLs.",

author = "Marco Lamperti and Bidoor Alsaif and Davide Gatti and Martin Fermann and Paolo Laporta and Aamir Farooq and Marco Marangoni",

note = "KAUST Repository Item: Exported on 2020-10-01 Acknowledgements: Funding received from the cooperative project FEAST between Politecnico di Milano and King Abdullah University of Science and Technology (KAUST) under the Competitive Center Funding program of KAUST and from the Italian Ministry of Research and Education (ELI project ESFRI Roadmap).",

year = "2018",

month = jan,

day = "22",

doi = "10.1038/s41598-018-19188-2",

language = "English (US)",

volume = "8",

journal = "Scientific Reports",

issn = "2045-2322",

publisher = "Nature Research",

number = "1",

}

TY - JOUR

T1 - Absolute spectroscopy near 7.8 μm with a comb-locked extended-cavity quantum-cascade-laser

AU - Lamperti, Marco

AU - Alsaif, Bidoor

AU - Gatti, Davide

AU - Fermann, Martin

AU - Laporta, Paolo

AU - Farooq, Aamir

AU - Marangoni, Marco

N1 - KAUST Repository Item: Exported on 2020-10-01 Acknowledgements: Funding received from the cooperative project FEAST between Politecnico di Milano and King Abdullah University of Science and Technology (KAUST) under the Competitive Center Funding program of KAUST and from the Italian Ministry of Research and Education (ELI project ESFRI Roadmap).

PY - 2018/1/22

Y1 - 2018/1/22

N2 - We report for the first time the frequency locking of an extended-cavity quantum-cascade-laser (EC-QCL) to a near-infrared frequency comb. The locked laser source is exploited to carry out molecular spectroscopy around 7.8 μm with a line-centre frequency combined uncertainty of ~63 kHz. The strength of the approach, in view of an accurate retrieval of line centre frequencies over a spectral range as large as 100 cm-1, is demonstrated on the P(40), P(18) and R(31) lines of the fundamental rovibrational band of N2O covering the centre and edges of the P and R branches. The spectrometer has the potential to be straightforwardly extended to other spectral ranges, till 12 μm, which is the current wavelength limit for commercial cw EC-QCLs.

AB - We report for the first time the frequency locking of an extended-cavity quantum-cascade-laser (EC-QCL) to a near-infrared frequency comb. The locked laser source is exploited to carry out molecular spectroscopy around 7.8 μm with a line-centre frequency combined uncertainty of ~63 kHz. The strength of the approach, in view of an accurate retrieval of line centre frequencies over a spectral range as large as 100 cm-1, is demonstrated on the P(40), P(18) and R(31) lines of the fundamental rovibrational band of N2O covering the centre and edges of the P and R branches. The spectrometer has the potential to be straightforwardly extended to other spectral ranges, till 12 μm, which is the current wavelength limit for commercial cw EC-QCLs.

UR - http://hdl.handle.net/10754/627001

UR - https://www.nature.com/articles/s41598-018-19188-2

UR - http://www.scopus.com/inward/record.url?scp=85040999550&partnerID=8YFLogxK

U2 - 10.1038/s41598-018-19188-2

DO - 10.1038/s41598-018-19188-2

M3 - Article

C2 - 29358712

SN - 2045-2322

VL - 8

JO - Scientific Reports

JF - Scientific Reports

IS - 1

ER -

Absolute spectroscopy near 7.8 μm with a comb-locked extended-cavity quantum-cascade-laser

Abstract

Access to Document

Other files and links

Fingerprint

Cite this