scholarly journals Microprobing Structural Architecture Using Mid-Infrared Vibrational Molecular Spectroscopy

10.5772/64927 ◽  
2016 ◽  
Author(s):  
Yuguang Ying ◽  
Peiqiang Yu
Keyword(s):  
Molecular Spectroscopy ◽  
Mid Infrared ◽  
Structural Architecture

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.

scholarly journals A widely tunable 10-μm quantum cascade laser phase-locked to a state-of-the-art mid-infrared reference for precision molecular spectroscopy

2014 ◽  
Vol 104 (26) ◽  
pp. 264101 ◽  
Author(s):  
P. L. T. Sow ◽  
S. Mejri ◽  
S. K. Tokunaga ◽  
O. Lopez ◽  
A. Goncharov ◽  
...  
Keyword(s):  
Quantum Cascade Laser ◽  
Molecular Spectroscopy ◽  
State Of The Art ◽  
Mid Infrared ◽  
Quantum Cascade

scholarly journals Surface-enhanced molecular spectroscopy (SEMS) based on perfect-absorber metamaterials in the mid-infrared

2013 ◽  
Vol 3 (1) ◽  
Author(s):  
Yongqian Li ◽  
Lei Su ◽  
Chen Shou ◽  
Chunmeng Yu ◽  
Jinjun Deng ◽  
...  
Keyword(s):  
Molecular Spectroscopy ◽  
Perfect Absorber ◽  
Mid Infrared ◽  
Surface Enhanced

scholarly journals Probing weak force-induced parity violation by high-resolution mid-infrared molecular spectroscopy

2013 ◽  
Vol 111 (14-15) ◽  
pp. 2363-2373 ◽  
Author(s):  
S. K. Tokunaga ◽  
C. Stoeffler ◽  
F. Auguste ◽  
A. Shelkovnikov ◽  
C. Daussy ◽  
...  
Keyword(s):  
High Resolution ◽  
Parity Violation ◽  
Molecular Spectroscopy ◽  
Mid Infrared ◽  
Weak Force

scholarly journals Development Progress of 3–5 μm Mid-Infrared Lasers: OPO, Solid-State and Fiber Laser

2021 ◽  
Vol 11 (23) ◽  
pp. 11451
Author(s):  
Tingwei Ren ◽  
Chunting Wu ◽  
Yongji Yu ◽  
Tongyu Dai ◽  
Fei Chen ◽  
...  
Keyword(s):  
Solid State ◽  
Fiber Laser ◽  
Molecular Spectroscopy ◽  
Infrared Laser ◽  
Rare Earth Ions ◽  
Parametric Oscillation ◽  
Infrared Lasers ◽  
Infrared Band ◽  
Mid Infrared ◽  
Advantages And Disadvantages

A 3–5 μm mid-infrared band is a good window for atmospheric transmission. It has the advantages of high contrast and strong penetration under high humidity conditions. Therefore, it has important applications in the fields of laser medicine, laser radar, environmental monitoring, remote sensing, molecular spectroscopy, industrial processing, space communication and photoelectric confrontation. In this paper, the application background of mid-infrared laser is summarized. The ways to realize mid-infrared laser output are described by optical parametric oscillation, mid-infrared solid-state laser doped with different active ions and fiber laser doped with different rare earth ions. The advantages and disadvantages of various mid-infrared lasers are briefly described. The technical approaches, schemes and research status of mid-infrared lasers are introduced.

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.

scholarly journals 2-10 µm Mid-Infrared All-Fiber Supercontinuum Laser Source: Experiment and Simulation

2021 ◽  
Author(s):  
Thibaut Sylvestre
Keyword(s):  
Pulse Propagation ◽  
Molecular Spectroscopy ◽  
Laser Source ◽  
Physical Processes ◽  
Fiber System ◽  
Molecular Fingerprint ◽  
Mid Infrared ◽  
Wide Range ◽  
Pulsed Fiber Laser ◽  
Fingerprint Region

Mid-infrared supercontinuum (SC) sources in the 2 to 20 µm molecular fingerprint region are in high demand for a wide range of applications including optical coherence tomography, remote sensing, molecular spectroscopy, and hyperspectral imaging. In this work, we investigate mid-IR SC generation in a cascaded silica-ZBLAN-chalcogenide fiber system directly pumped with a commercially available 460-ps pulsed fiber laser operating in the telecommunications window at 1.55 µm. This all-fiber system is shown to generate a flat broadband mid-IR SC covering the entire range from 2 to 10 µm with severaltens of mWof output power. This technique paves the way for cheaper, practical, and robust broadband SC sources in the mid-IR without the requirement of mid-infrared pump sources or Thulium-dopedfiber amplifiers. We also describe a fully realistic numerical model used to simulate the nonlinear pulse propagation through the cascaded fiber system and we use our numerical results to discuss the physical processes underlying the spectral broadening in the cascaded system. We conclude with recommendations to optimize the current cascaded systems based on our simulation results.

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