Changes in the polarization states of random electromagnetic vortex beams propagating in biological tissues

• Autorzy: Duan M. , Wu Y. , Su N.

Identyfikatory

DOI

10.5277/oa180212

• Języki publikacji: EN

Abstrakty

EN

The changes in the on-axis polarization state of random electromagnetic Gaussian Schell-model vortex beams propagating in biological tissues have been studied. In different media propagation, the bigger C_n² is, the earlier the appearance of the inflexion points in the on-axis degree of the polarization P(0, 0, z) is. As the propagation distance increases, the values of the on-axis orientation angle θ(0, 0, z) undergo several processes: at the beginning they are positive, then gradually increase to the maximum, jump to a negative value, finally tend to a fixed value. The bigger C_n² corresponds to previous jumping position. In the entire propagation, the values of the on-axis ellipticity ε(0, 0, z) are larger than the initial one. There exists a phenomenon that the values of P(0, 0, z), θ(0, 0, z) and ε(0, 0, z) keep their extremes in a length of propagation distances for the far infrared beams. The maximum of P(0, 0, z) is the smallest and the jumping range of θ(0, 0, z) is the largest for the ultraviolet beams. Compared with σ_yy > σ_xx, the changes in magnitudes in P(0, 0, z) are more obvious when σ_yy < σ_xx, the changes in θ(0, 0, z) are just the reverse for σ_yy < σ_xx.

Słowa kluczowe

EN

random electromagnetic vortex beam; biological tissue; state of polarization

• Wydawca: Oficyna Wydawnicza Politechniki Wrocławskiej
• Czasopismo: Optica Applicata
• Rocznik: 2018
• Tom: Vol. 48, nr 2
• Strony: 297--309
• Opis fizyczny: Bibliogr. 24 poz., rys.

Twórcy

autor

Duan M.

• Department of Physics, North University of China, Taiyuan 030051, China

autor

Wu Y.

• Department of Physics, North University of China, Taiyuan 030051, China

autor

Su N.

• Department of Physics, North University of China, Taiyuan 030051, China

Bibliografia

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Uwagi

Opracowanie rekordu w ramach umowy 509/P-DUN/2018 ze środków MNiSW przeznaczonych na działalność upowszechniającą naukę (2018).