Mid-Infrared Frequency Combs for Direct Molecular Spectroscopy

2014 ◽  
Author(s):  
A. Schliesser ◽  
N. Picqué ◽  
T. W. Hänsch
Keyword(s):  
Molecular Spectroscopy ◽  
Mid Infrared ◽  
Frequency Combs

scholarly journals Broadband high-resolution molecular spectroscopy with interleaved mid-infrared frequency combs

2020 ◽  
Vol 10 (1) ◽  
Author(s):  
A. V. Muraviev ◽  
D. Konnov ◽  
K. L. Vodopyanov
Keyword(s):  
High Resolution ◽  
Molecular Spectroscopy ◽  
Frequency Comb ◽  
Acquisition Time ◽  
Sampling Point ◽  
Dual Frequency ◽  
Mid Infrared ◽  
Frequency Combs ◽  
Spectral Bands ◽  
Primary Frequency

Abstract Traditionally, there has been a trade-off in spectroscopic measurements between high resolution, broadband coverage, and acquisition time. Originally envisioned for precision spectroscopy of the hydrogen atom in the ultraviolet, optical frequency combs are now commonly used for probing molecular ro-vibrational transitions throughout broad spectral bands in the mid-infrared providing superior resolution, speed, and the capability of referencing to the primary frequency standards. Here we demonstrate the acquisition of 2.5 million spectral data points over the continuous wavelength range of 3.17–5.13 µm (frequency span 1200 cm−1, sampling point spacing 13–21 MHz), via interleaving comb-tooth-resolved spectra acquired with a highly-coherent broadband dual-frequency-comb system based on optical subharmonic generation. With the original comb-line spacing of 115 MHz, overlaying eight spectra with gradually shifted comb lines we fully resolve the amplitude and phase spectra of molecules with narrow Doppler lines, such as carbon disulfide (CS2) and its three isotopologues.

Mid-infrared optical parametric oscillators and frequency combs for molecular spectroscopy

2016 ◽  
Vol 18 (6) ◽  
pp. 4266-4294 ◽  
Author(s):  
M. Vainio ◽  
L. Halonen
Keyword(s):  
Molecular Spectroscopy ◽  
Gas Detection ◽  
High Resolution Spectroscopy ◽  
Trace Gas ◽  
Optical Parametric Oscillators ◽  
Mid Infrared ◽  
Frequency Combs ◽  
Parametric Oscillators ◽  
Optical Parametric ◽  
Fundamental Research

Review of mid-infrared optical parametric oscillators and frequency combs for high-resolution spectroscopy, including applications in trace gas detection and fundamental research.

scholarly journals Mid-infrared feed-forward dual-comb spectroscopy

2019 ◽  
Vol 116 (9) ◽  
pp. 3454-3459 ◽  
Author(s):  
Zaijun Chen ◽  
Theodor W. Hänsch ◽  
Nathalie Picqué
Keyword(s):  
Molecular Spectroscopy ◽  
Signal To Noise Ratio ◽  
High Resolution Spectroscopy ◽  
High Signal ◽  
Mid Infrared ◽  
Frequency Combs ◽  
Line Shapes ◽  
Frequency Scale ◽  
Invaluable Tool ◽  
Spectral Profiles

Mid-infrared high-resolution spectroscopy has proven an invaluable tool for the study of the structure and dynamics of molecules in the gas phase. The advent of frequency combs advances the frontiers of precise molecular spectroscopy. Here we demonstrate, in the important 3-µm spectral region of the fundamental CH stretch in molecules, dual-comb spectroscopy with experimental coherence times between the combs that exceed half an hour. Mid-infrared Fourier transform spectroscopy using two frequency combs with self-calibration of the frequency scale, negligible contribution of the instrumental line shape to the spectral profiles, high signal-to-noise ratio, and broad spectral bandwidth opens up opportunities for precision spectroscopy of small molecules. Highly multiplexed metrology of line shapes may be envisioned.

scholarly journals Mid-infrared optical frequency combs based on difference frequency generation for molecular spectroscopy

2015 ◽  
Vol 23 (20) ◽  
pp. 26814 ◽  
Author(s):  
Flavio C. Cruz ◽  
Daniel L. Maser ◽  
Todd Johnson ◽  
Gabriel Ycas ◽  
Andrew Klose ◽  
...  
Keyword(s):  
Molecular Spectroscopy ◽  
Difference Frequency Generation ◽  
Difference Frequency ◽  
Optical Frequency ◽  
Mid Infrared ◽  
Optical Frequency Combs ◽  
Frequency Combs ◽  
Frequency Generation

scholarly journals Mid-infrared quantum cascade laser frequency combs with a microstrip-like line waveguide geometry

2021 ◽  
Vol 118 (7) ◽  
pp. 071101
Author(s):  
Filippos Kapsalidis ◽  
Barbara Schneider ◽  
Matthew Singleton ◽  
Mathieu Bertrand ◽  
Emilio Gini ◽  
...  
Keyword(s):  
Quantum Cascade Laser ◽  
Laser Frequency ◽  
Mid Infrared ◽  
Frequency Combs ◽  
Quantum Cascade ◽  
Waveguide Geometry

scholarly journals Modelocked Mid-Infrared Frequency Combs in a Silicon Microresonator

2016 ◽  
Author(s):  
Mengjie Yu ◽  
Yoshitomo Okawachi ◽  
Austin G. Griffith ◽  
Michal Lipson ◽  
Alexander L. Gaeta
Keyword(s):  
Mid Infrared ◽  
Frequency Combs

A New Capability for Light Microscopes: Mid infrared Molecular Analysis

2003 ◽  
Vol 11 (4) ◽  
pp. 16-21
Author(s):  
Alan J. Rein
Keyword(s):  
Molecular Analysis ◽  
Infrared Radiation ◽  
Molecular Spectroscopy ◽  
Mid Infrared ◽  
Ft Ir

The merger of molecular spectroscopy with microscopy is certainly not a new concept. Microscope attachments for FT-IR spectrometers have been available for nearly two decades and there are literally thousands of FT-IR spectrometers with these devices currently installed. The vast majority of them are applied to contaminant or forensic oriented problems. As such, the microscopes are often used as sophisticated beam condensers, enabling the spectrometer to focus infrared radiation on the samples that are typically larger than 10 microns.

Broadband molecular spectroscopy with optical frequency combs

2019 ◽  
Vol 355 ◽  
pp. 66-78 ◽  
Author(s):  
Marissa L. Weichman ◽  
P. Bryan Changala ◽  
Jun Ye ◽  
Zaijun Chen ◽  
Ming Yan ◽  
...  
Keyword(s):  
Molecular Spectroscopy ◽  
Optical Frequency ◽  
Optical Frequency Combs ◽  
Frequency Combs

scholarly journals Coherent mid-infrared frequency combs in silicon-microresonators in the presence of Raman effects

2016 ◽  
Vol 24 (12) ◽  
pp. 13044 ◽  
Author(s):  
Austin G. Griffith ◽  
Mengjie Yu ◽  
Yoshitomo Okawachi ◽  
Jaime Cardenas ◽  
Aseema Mohanty ◽  
...  
Keyword(s):  
Mid Infrared ◽  
Frequency Combs
Sign in / Sign up

Export Citation Format

Share Document