Results 11 to 20 of about 84,369 (338)

Optoelectronic frequency-modulated continuous-wave terahertz spectroscopy with 4 THz bandwidth [PDF]

open access: goldNature Communications, 2021
Time-domain spectroscopy with terahertz frequencies typically requires complex and bulky systems. Here, the authors present an opto-electronics-based, frequency-domain terahertz sensing technique which offers competitive measurement performance in a much
Lars Liebermeister   +7 more
doaj   +2 more sources

Efficient continuous-wave noise spectroscopy beyond weak coupling [PDF]

open access: greenPhysical Review A, 2018
The optimization of quantum control for physical qubits relies on accurate noise characterization. Probing the spectral density $S(ω)$ of semi-classical phase noise using a spin interacting with a continuous-wave (CW) resonant excitation field has recently gained attention.
Willick, Kyle   +2 more
openaire   +4 more sources

Influence of extracerebral layers on estimates of optical properties with continuous wave near infrared spectroscopy: analysis based on multi-layered brain tissue architecture and Monte Carlo simulation

open access: goldComputer Assisted Surgery, 2019
Continuous wave near-infrared spectroscopy (CW-NIRS) can be used to measure cerebral activity because it is noninvasive, simple and portable. However, the performance of the continuous wave near-infrared spectroscopy is distorted by the presence of ...
Yan Zhang   +5 more
doaj   +2 more sources

Continuous-wave cavity ringdown spectroscopy based on the control of cavity reflection

open access: goldOptics Express, 2013
A new type of continuous-wave cavity ringdown spectrometer based on the control of cavity reflection for trace gas detection was designed and evaluated. The technique separated the acquisitions of the ringdown event and the trigger signal to optical switch by detecting the cavity reflection and transmission, respectively.
Zhixin, Li   +8 more
openaire   +3 more sources

A Co-programmable Platform for Continuous-Wave Ultra-Broadband Nonlinear Mid-IR Vibrational Spectroscopy

open access: green
This document presents the core chapters of a doctoral thesis developing a co-programmable platform for continuous-wave nonlinear mid-infrared vibrational spectroscopy.
Xie, Zhiyuan
core   +2 more sources

Quantum-Enhanced continuous-wave stimulated Raman spectroscopy

open access: yes, 2020
Stimulated Raman spectroscopy has become a powerful tool to study the spatiodynamics of molecular bonds with high sensitivity, resolution and speed. However, sensitivity and speed of state-of-the-art stimulated Raman spectroscopy are currently limited by the shot-noise of the light beam probing the Raman process.
Andrade, R. B.   +5 more
openaire   +3 more sources

Controlling the optical pathlength in continuous-wave reflectance spectroscopy using polarization

open access: goldBiomedical Optics Express, 2021
We investigate potential improvements of continuous-wave diffuse reflectance spectroscopy within highly scattering media by employing polarization gating. Simulations are used to show the extent at which the effective optical pathlength varies in a typical scattering medium as a function of the optical wavelength, the total level of absorption, and the
Macdonald, Callum   +5 more
openaire   +4 more sources

Continuous wave terahertz spectroscopy system designed for medical field [PDF]

open access: bronze, 2015
We have constructed a continuous wave (CW) terahertz spectroscopy system using photonic integration-compatible technology. This system is intended for use in the medical field as a miniaturized terahertz spectroscopy system, in contrast to the ...
SONG, HO JIN   +2 more
core   +2 more sources

Time-Resolved Resonance Raman Spectroscopy of Retinal Proteins with Continuous-Wave Excitation—A Fundamental Methodology Revisited [PDF]

open access: diamondPhotochem
Time-resolved (TR) resonance Raman (RR) spectroscopy with continuous-wave excitation is a fundamental technique that has contributed substantially to the understanding of the structure and dynamics of retinal proteins.
Anna Lena Schäfer   +5 more
doaj   +2 more sources

Characterization of Gramicidin A in Triblock and Diblock Polymersomes and Hybrid Vesicles via Continuous Wave Electron Paramagnetic Resonance Spectroscopy [PDF]

open access: goldBiomimetics
Studying membrane proteins in a native environment is crucial to understanding their structural and/or functional studies. Often, widely accepted mimetic systems have limitations that prevent the study of some membrane proteins.
Emma A. Gordon   +3 more
doaj   +2 more sources

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