Laser Frequency Noise Measurement by Forming an Interference Signal with Subcarrier Frequency

Kostromitin, Aleksei O.; Skliarov, Philipp V.; Лиокумович, Л. Б.; Ushakov, Nikolai

doi:10.1109/eexpolytech.2019.8906857

Cited by 3 publications

(1 citation statement)

References 8 publications

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“…For the development, we used the scattering theory described in [30]. A single-frequency semiconductor laser module with a coherence length of more than 100 m, wavelength λ = 633 nm, and radiation power of up to 10 mW was used as a radiation source [31]. The choice of the wavelength of the optical radiation source is determined from the requirement to minimize the absorption of the test solution.…”

Section: Dynamic Light Scattering Spectrometermentioning

confidence: 99%

Molecular Aggregation in Immune System Activation Studied by Dynamic Light Scattering

Velichko

Makarov

Nepomnyashchaya

2020

Biology

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Determination of the concentration and size of the circulating immune complexes in the blood is an essential part of diagnostics of immune diseases. In this work, we suggest using the dynamic light scattering method to determine the sizes of circulating immune complexes in blood serum. By the dynamic light scattering spectrometer, we found that for healthy and sick donors, the size and concentration of circulating immune complexes differed significantly. The dynamics of formation of these complexes were also examined in this work. It was shown that the formation of immune complexes in the blood of healthy donors is faster than the same reactions in the blood serum of donors with diseases. The results can be used in the diagnostics of the immune status and detection of chronic inflammation. We can recommend the dynamic light scattering method for implementation in biomedical diagnostics.

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Section: Dynamic Light Scattering Spectrometermentioning

confidence: 99%

Molecular Aggregation in Immune System Activation Studied by Dynamic Light Scattering

Velichko

Makarov

Nepomnyashchaya

2020

Biology

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Computer Modeling of Fiber Optic Current Sensor

Temkina

Medvedev

Mayzel

2020

Springer Proceedings in Physics

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On Basic Requirements to Main Elements of Laser Correlation Spectrometer

Velichko

Котов

Nepomniashchaia

et al. 2020

Izv. vysš. učebn. zaved. Ross., Radioèlektron.

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Introduction. Laser correlation spectroscopy is a promising method that allows one to analyze sizes of nanoparticles and to evaluate their shape and dynamics of aggregation in liquids. A limited usage of laser correlation spectroscopy is currently caused by insufficient accuracy of existing instruments and data processing algorithms. The paper described the development of laser correlation spectroscopic hardware complex designed for nanoparticles size determination in liquids. The basic requirements for the elements of the device and the approaches used to calculate the signal-to-noise ratio were discussed. The achieved parameters of the laser correlation spectrometer were presented.Aim. To develop the hardware for nanoparticles size determination in liquids and to optimize the parameters of hardware elements to increase signal-to-noise ratio.Materials and methods. Theory of dynamic light scattering to describe scattering of laser radiation in liquids was applied. Fundamental requirements for the elements of the laser correlation spectrometer were described.Results. An original scheme of the laser correlation spectrometer was developed, the basic requirements for the general scheme elements were described. Equations for calculating signal-to-noise ratio were given.Conclusion. The analysis of the main parameters of the elements of the laser correlation spectroscopic scheme were carried out. It helps one to evaluate the expected signal-to-noise ratio in laser correlation spectrometers.

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Laser Frequency Noise Measurement by Forming an Interference Signal with Subcarrier Frequency

Cited by 3 publications

References 8 publications

Molecular Aggregation in Immune System Activation Studied by Dynamic Light Scattering

Molecular Aggregation in Immune System Activation Studied by Dynamic Light Scattering

Computer Modeling of Fiber Optic Current Sensor

On Basic Requirements to Main Elements of Laser Correlation Spectrometer

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