Measurement of intensity and polarization beatings in the interference of independent optical fields

Shevchenko, Andriy; Setälä, Tero

doi:10.1103/physrevresearch.2.012053

Cited by 3 publications

(3 citation statements)

References 15 publications

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“…On the contrary, the frequency components of the (considered) cw beams do not correlate and the intensity evolution of the beam is not fully predictable. Nonetheless, the intensity beating of the beam can be considered harmonic within a certain time interval called the beating harmonicity time τ bh [40,41], which is defined as the time it takes for the envelope of a normalized intensity correlation function to decrease to the value of 1/2. References [40,41] present an approximate expression for the beating harmonicity time for two beating fields with Gaussian spectra and Gaussian statistics, which can be generalized for N fields as…”

Section: Multifrequency Bessel Beamsmentioning

confidence: 99%

“…We show that cw beams in the form of a superposition of a few independent quasimonochromatic Bessel beams can have a well-defined adjustable group velocity. Exhibiting the wave beating phenomenon, they behave essentially deterministically if the beating period is much shorter than the beating harmonicity time that is mainly determined by the spectral width of the interfering components [40,41]. Both pulsed and cw beams can have arbitrary positive and negative as well as spatially and temporally varying group velocities, which is demonstrated by examples.…”

Section: Introductionmentioning

confidence: 97%

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Multifrequency Bessel beams with adjustable group velocity and longitudinal acceleration in free space

et al. 2022

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The group velocity of an optical beam in free space is usually considered to be equal to the speed of light in vacuum. However, it has been recently realized that, by structuring the beam's angular and temporal spectra, one can achieve well pronounced and controlled subluminal and superluminal propagation. In this work, we consider multifrequency Bessel beams that are known to propagate without divergence and show a variety of possibilities to adjust the group velocity of the beam by means of designed angular dispersion. We present several examples of multifrequency Bessel beams with negative and arbitrary positive group velocities, as well as longitudinally accelerating beams and beams with periodically oscillating local group velocities. The results of these studies can be of interest to scientists working in the fields of optical beam engineering, light amplitude and intensity interferometry, ultrafast optics, and optical tweezers.

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Section: Multifrequency Bessel Beamsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 97%

Multifrequency Bessel beams with adjustable group velocity and longitudinal acceleration in free space

et al. 2022

Self Cite

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“…The detection response rate makes it can obtain the signal on the order of a few femtosecond [24,25]. In this way, many meaningful phenomena have measured based on TPA detection, such as the extrabunching effect [26,27], ultrabroadband ghost imaging [28], ghost polarimetry [29][30][31][32], and superbunching effect of broadband chaotic light [33]. In fact, the counts detected by the TPA detector contains many different two-photon interference information, including the second-order interference term, the background term, the subwavelength interference term and so on.…”

Section: Introductionmentioning

confidence: 99%

Observing two-photon subwavelength interference of broadband chaotic light in polarization-selective Michelson interferometer

Luo,

Zhou,

Zheng

et al. 2021

Preprint

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Differing from the traditional method to achieve subwavelength interference, we have demonstrated the two-photon subwavelength interference effect of broadband chaotic light in polarization-selective Michelson interferometer with an ultrafast two-photon absorption detector for the first time, which is achieved by manipulating two-photon probability amplitudes involved in the interference. In theory, the two-photon polarization coherence matrix and probability amplitudes matrix are combined to develop polarized two-photon interference terms, which explains the experimental results well. In order to make better use of this interferometer to produce the subwavelength effect, we also make a series of error analyses to find out the relationship between the visibility and the degree of polarization error. Our experimental and theoretical results are helpful to understand the two-photon subwavelength interference, which sheds light on the development of the two-photon interference theory of vector light field based on quantum mechanics. These experimental results may help to develop future optical interferometry, optical polarimetry, and subwavelength lithography.

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Observing two-photon subwavelength interference of broadband chaotic light in a polarization-selective Michelson interferometer

Luo

Zheng

et al. 2021

Opt. Express

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We demonstrated a method to achieve the two-photon subwavelength effect of true broadband chaotic light in polarization-selective Michelson interferometer based on two-photon absorption detection. To our knowledge, it is the first time that this effect has been observed with broadband chaotic light. In theory, the two-photon polarization coherence matrix and probability amplitudes matrix are combined to develop polarized two-photon interference terms, which explains the experimental results well. To make better use of this interferometer to produce the subwavelength effect, we also make a series of error analyses to find out the relationship between the visibility and the degree of polarization error. Our experimental and theoretical results contribute to the understanding of the two-photon subwavelength interference, which shed light on the development of the two-photon interference theory of vector light field based on quantum mechanics. The characteristic of the two-photon subwavelength effect have significant applications in temporal ghost imaging, such as it helps to improve the resolution of temporal objects.

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Measurement of intensity and polarization beatings in the interference of independent optical fields

Cited by 3 publications

References 15 publications

Multifrequency Bessel beams with adjustable group velocity and longitudinal acceleration in free space

Multifrequency Bessel beams with adjustable group velocity and longitudinal acceleration in free space

Observing two-photon subwavelength interference of broadband chaotic light in polarization-selective Michelson interferometer

Observing two-photon subwavelength interference of broadband chaotic light in a polarization-selective Michelson interferometer

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