On the direct detection of gravitational waves

Пустовойт, В. И.

doi:10.3367/ufne.2016.03.037900

Cited by 26 publications

(6 citation statements)

References 84 publications

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“…Отметим, что при использовании многолучевого интерферометра для регистрации высокочастотных гравитационных волн не требуется создание сложной системы развязки зеркал, применяющейся для гравитационных антенн, работающих в низкочастотной части спектра [1]. Это связано с тем, что частота механических колебаний зеркал интерферометра в этом случае оказывается существенно меньше частоты гравитационной волны [14].…”

Section: спектральная плотность реликтовых гравитационных волнunclassified

“…Гравитационные волны, предсказанные теорий относительности и зарегистрированные с помощью установки LIGO, имеют характерные частоты в районе 30…300 Гц [1]. Современные теории гравитации предсказывают существование высокочастотных гравитационных волн, в том числе космологического происхождения, индуцированных квантовыми флуктуациями скалярного поля (или мультиплета полей) на стадии космологической инфляции в ранней Вселенной [2,3].…”

Section: Introductionunclassified

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Information-Measuring Complex to Detect High Frequency Gravitational Waves

Golyak

Morozov

Nazolin

et al. 2021

jour

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The gravitational waves predicted by the general theory of relativity and detected by the Laser Interferometer Gravitational-wave Observatory (LIGO) have typical frequencies in the range of 30 ... 300 Hz. Current theories of gravity predict the existence of high-frequency gravitational waves with frequencies of 10 ... 100 MHz, including those of cosmological origin, induced by quantum fluctuations of the scalar field at the stage of cosmological inflation in the early Universe.Multi-beam optical resonators, in particular the Fabry-Perot interferometers, can be used to detect high-frequency gravitational waves. When using multi-beam optical resonators, it is possible to use the phenomenon of low-frequency optical resonance, which allows us to have a selective response to the gravitational wave effect. The gravitational-optical resonance in a multi-beam interferometer occurs if the condition is fulfilled that an integer number of half-waves of gravitational radiation is along the length of the resonator.The use of a multi-beam interferometer to detect high-frequency gravitational waves does not require the creation of a complex system for decoupling mirrors used for gravitational antennas operating in the low-frequency part of the spectrum. This is due to the fact that the frequency of mechanical vibrations of the interferometer mirrors is significantly less than the frequency of the gravitational wave.The paper considers possible optical schemes of a high-frequency gravitational antenna: based on the traditional Michelson interferometer, in the arms of which two Fabry-Perot interferometers are available, and on the basis of the Mach-Zehnder optical scheme, where Fabry-Perot interferometers can be made in the form of two perpendicular arms, with reflecting mirrors at the bend of the beam. The advantage of the second scheme is that three photo-detectors, one being main and two others being auxiliary, can be used, and there is a possibility to detect radiation transmitted by Fabry-Perot interferometers.To prove that detection of high-frequency gravitational waves is possible, a potential sensitivity of the high-frequency gravitational antenna has been estimated in the paper.

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Section: спектральная плотность реликтовых гравитационных волнunclassified

Section: Introductionunclassified

Information-Measuring Complex to Detect High Frequency Gravitational Waves

Golyak

Morozov

Nazolin

et al. 2021

jour

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“…In 2015, these waves were detected experimentally by two detectors of the Laser interference gravitational wave Observatory (LIGO) in Hanford and Livingston (USA) [ 2 , 3 ]. A detailed analysis of the current state is given in the review [ 4 ].…”

Section: Introductionmentioning

confidence: 99%

Small-Sized Interferometer with Fabry–Perot Resonators for Gravitational Wave Detection

Petrov

Пустовойт

2021

Sensors

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It is highly desirable to have a compact laser interferometer for detecting gravitational waves. Here, a small-sized tabletop laser interferometer with Fabry–Perot resonators consisting of two spatially distributed “mirrors” for detecting gravitational waves is proposed. It is shown that the spectral resolution of 10−23 cm−1 can be achieved at a distance between mirrors of only 1–3 m. The influence of light absorption in crystals on the limiting resolution of such resonators is also studied. A higher sensitivity of the interferometer to shorter-wave laser radiation is shown. A method for detecting gravitational waves is proposed based on the measurement of the correlation function of the radiation intensities of non-zero-order resonant modes from the two arms of the Mach–Zehnder interferometer.

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“…In 2015, these waves were detected experimentally by two detectors of the Laser interference gravitational wave Observatory (LIGO) in Hanford and Livingston (USA) [2,3]. A detailed analysis of the current state is given in the review [4].…”

Section: Introductionmentioning

confidence: 99%