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   Articles with "complex refractive" as a keyword



Application of the time-domain and frequency-domain radiative measurement signals in retrieving the spectral complex refractive index of microalgae

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recommendations! Published in 2017 at "International Journal of Hydrogen Energy"

DOI: 10.1016/j.ijhydene.2017.02.007

Abstract: Abstract Time-domain (TD) and frequency-domain (FD) pulse lasers are employed as the measurement lasers to retrieve the spectral complex refractive indices of microalgae, respectively. The finite volume method and an improved quantum-behaved particle swarm optimization… read more here.

Keywords: spectral complex; domain frequency; time domain; complex refractive ... See more keywords
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A method to retrieve the spectral complex refractive index and single scattering optical properties of dust deposited in mountain snow

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recommendations! Published in 2017 at "Journal of Glaciology"

DOI: 10.1017/jog.2016.126

Abstract: Dust deposition to snow can have regionally important climatic and hydrologic impacts resulting from direct reduction of surface albedo and indirectly from the initiation of snow albedo feedbacks. Modeling the radiative impacts of dust deposited… read more here.

Keywords: optical properties; dust deposited; single scattering; complex refractive ... See more keywords

Measurements of complex refractive index change of photoactive yellow protein over a wide wavelength range using hyperspectral quantitative phase imaging

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recommendations! Published in 2018 at "Scientific Reports"

DOI: 10.1038/s41598-018-21403-z

Abstract: A novel optical holographic technique is presented to simultaneously measure both the real and imaginary components of the complex refractive index (CRI) of a protein solution over a wide visible wavelength range. Quantitative phase imaging… read more here.

Keywords: protein; wavelength range; complex refractive; refractive index ... See more keywords

Determination of the complex refractive index and optical bandgap of CH3NH3PbI3 thin films

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recommendations! Published in 2017 at "Journal of Applied Physics"

DOI: 10.1063/1.4982894

Abstract: We report the complex refractive index of methylammonium lead iodide (CH3NH3PbI3) perovskite thin films obtained by means of variable angle spectroscopic ellipsometry and transmittance/reflectance spectrophotometry in the wavelength range of 190 nm to 2500 nm. The film… read more here.

Keywords: bandgap; thin films; optical bandgap; complex refractive ... See more keywords

Measurement of azo dye film with large photo-induced birefringence and complex refractive index

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recommendations! Published in 2023 at "AIP Advances"

DOI: 10.1063/5.0149433

Abstract: Azo dyes are valuable functional materials due to their sensitive response to and effective modulation of polarized light. It is essential to find out not only the optical anisotropy but also the complex refractive index… read more here.

Keywords: azo dye; refractive index; dye film; film ... See more keywords

Microfluidic–nanophotonic sensor for on-chip analysis of complex refractive index

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recommendations! Published in 2024 at "Applied Physics Letters"

DOI: 10.1063/5.0190351

Abstract: Photonic biosensors based on photonic integrated circuits (PICs) and microfluidic channels (MFCs) have become the subject of intensive research for point-of-care (POC) device applications. In the presented work, we demonstrate the possibility of identifying the… read more here.

Keywords: complex refractive; nanophotonic sensor; sensor chip; microfluidic nanophotonic ... See more keywords
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Refractive index confidence explorer (RICE): A tool for propagating uncertainties through complex refractive index retrievals from aerosol particles

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recommendations! Published in 2021 at "Aerosol Science and Technology"

DOI: 10.1080/02786826.2021.1895428

Abstract: Abstract Accurate and precise retrievals of aerosol complex refractive indices (m) are essential to constraining the direct radiative effect of atmospheric aerosols. Despite this, there is no generally accepted method for constraining the uncertainty in… read more here.

Keywords: index; uncertainty; rice; confidence ... See more keywords
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Direct method of extracting broadband complex refractive index from spectrophotometric measurements: an application to polydimethylsiloxane for passive radiative cooling

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recommendations! Published in 2021 at "Journal of Photonics for Energy"

DOI: 10.1117/1.jpe.11.032105

Abstract: Abstract. We describe an algorithm to extract the complex refractive index of a material from broadband reflectance and transmittance measurements taken by spectrophotometers. The algorithm combines Kramers–Kronig analysis with an inversion of Fresnel’s equations to… read more here.

Keywords: broadband; refractive index; direct method; passive radiative ... See more keywords

EXPRESS: Extension of Complex Refractive Index Measurements to the Near-Infrared for Liquids: Methodology and Uncertainty Analysis.

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recommendations! Published in 2025 at "Applied spectroscopy"

DOI: 10.1177/00037028251399225

Abstract: Optical identification of liquid droplets, aerosols, or thin films is critical for many applications. While reference spectra are sometimes available for such measurements, they are not always applicable to the observed spectrum or the given… read more here.

Keywords: methodology; final vectors; complex refractive; extension complex ... See more keywords

Broadband calibration-free cavity-enhanced complex refractive index spectroscopy using a frequency comb.

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recommendations! Published in 2018 at "Optics express"

DOI: 10.1364/oe.26.020633

Abstract: We present broadband cavity-enhanced complex refractive index spectroscopy (CE-CRIS), a technique for calibration-free determination of the complex refractive index of entire molecular bands via direct measurement of transmission modes of a Fabry-Perot cavity filled with… read more here.

Keywords: cavity; calibration free; spectroscopy; complex refractive ... See more keywords

Reconstructing complex refractive-index of multiply-scattering media by use of iterative optical diffraction tomography.

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recommendations! Published in 2020 at "Optics express"

DOI: 10.1364/oe.380309

Abstract: Conventional optical diffraction tomography (ODT) techniques fail in the presence of multiple scattering, and the problem becomes even more challenging when the medium is also lossy. Iterative ODT (iODT), which was shown recently to be… read more here.

Keywords: multiply scattering; optical diffraction; diffraction tomography; complex refractive ... See more keywords