Results 11 to 20 of about 896,153 (298)
Applied Sciences, 2021 The measurement accuracy of trace gas detection based on infrared absorption spectroscopy is influenced by the overlap of absorption lines. A method for correcting the interference of overlapping absorption lines using second harmonic spectral ...
Yue Hou, Kejin Huang
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Integrated Nanophotonic Waveguide-Based Devices for IR and Raman Gas Spectroscopy
Sensors, 2021 On-chip devices for absorption spectroscopy and Raman spectroscopy have been developing rapidly in the last few years, triggered by the growing availability of compact and affordable tunable lasers, detectors, and on-chip spectrometers.
Sebastián Alberti +2 more
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Entanglement-Assisted Absorption Spectroscopy [PDF]
Physical Review Letters, 2020 We propose a practical transmitter-receiver system that exploits entanglement to achieve a provable quantum advantage over all spectrometers based on classical sources. The quantum advantage is robust against noise and loss.
Shi, Haowei +3 more
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Optical Characterization of Ciprofloxacin Photolytic Degradation by UV-Pulsed Laser Radiation
Molecules, 2021 Ciprofloxacin is one of the most prescribed antibiotics in treating bacterial infections, becoming an important pollutant of the wastewaters. Moreover, ciprofloxacin is hard to be destroyed by conventional water treatment processes; therefore, efficient ...
Tatiana Tozar +3 more
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Long-Term Stable Online Acetylene Detection by a CEAS System with Suppression of Cavity Length Drift
Sensors, 2019 A trace acetylene (C2H2) detection system was demonstrated using the cavity-enhanced absorption spectroscopy (CEAS) technique and a near-infrared distributed feedback (NIR-DFB) laser.
Qixin He, Qibo Feng, Jiakun Li
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Intensity dependent deflection spectroscopy for absorption measurements [PDF]
EPJ Web of Conferences, 2020 We report on a method for the characterization of optical absorption in semiconductors at photon energies below the bandgap energy. We use intensity dependent deflection spectroscopy to measure spatially resolved the optical absorption and to separate ...
Dickmann Walter +3 more
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IEEE Photonics Journal, 2017 This paper presents a detailed experimental wavelength modulation spectroscopy approach and demonstrates its applicability to various types of semiconductor lasers in the near infrared and mid-infrared.
Abhishek Upadhyay +5 more
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Reduction of optical noise in near-infrared range laser hygrometry [PDF]
Metrology and Measurement Systems, 2023 A contactless laser hygrometer based on light absorption by H2O molecules at 1392.5 nm is described. However, measurement results can be affected by optical noise when applied to an atmospheric tunnel or glass cuvette.
Tadeusz Stacewicz +2 more
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Interpretation of X-ray Absorption Spectroscopy in the Presence of Surface Hybridization [PDF]
, 2017 X-ray absorption spectroscopy yields direct access to the electronic and geometric structure of hybrid inorganic-organic interfaces formed upon adsorption of complex molecules at metal surfaces.
Diller, Katharina +3 more
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Ultrasensitive Absorption Spectroscopy
Physics, 2011 Absorption spectroscopy limited only by quantum noise has been demonstrated over a broad frequency range using laser frequency combs.
Mandon, J.B., Harren, F.
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