Nonreciprocal localization of light in magnetoactive cholesteric liquid crystals in an external magnetic field

Magnetically induced transparency and absorption in cholesteric liquid crystals

“…Consideration of this limiting case, below, will allow us to reveal many features of magnetooptical CLCs in their purest form, which in the more general case of Re∆≠ 0 have more complex manifestations. Some features of the optical properties of such media are considered in detail in [33][34][35]. In this case Eq.…”

“…Magneto-optics of cholesteric liquid crystals (CLCs) is of particular interest. The papers [16][17][18][19][20][21][22][23][24][25][26] present the results of a theoretical and experimental study of the magnetooptical properties of CLCs. Then, in the papers [27][28][29][30] the existence of MIT and MIA was demonstrated in short wavelength part of spectrum in CLCs being in external magnetic field both at the presence and absence of local dielectric anisotropy.…”

“…It was shown that the MIT and MIA phenomena are observed exactly at the Dirac points. However, all the works [16][17][18][19][20][21][22][23][24][25][26][27][28][29][30][31] deal with the case when the parameter of magneto-optical activity g is constant and is independent of wavelength. It was shown in [32] that in the case of the wavelength dependence of the magneto-optical activity parameter in the short-wavelength spectrum, no MIT effect nor MIA effect is observed.…”

“…However, all the works [16][17][18][19][20][21][22][23][24][25][26][27][28][29][30][31] deal with the case when the parameter of magneto-optical activity g is constant and is independent of wavelength. It was shown in [32] that in the case of the wavelength dependence of the magneto-optical activity parameter in the short-wavelength spectrum, no MIT effect nor MIA effect is observed. And now a natural question arises as to the existence of these effects in magnetically active CLCs in the case of the frequency dependence of the magneto-optical activity parameter.…”

Dirac Points in Chiral Liquid Crystals

“…Magneto-optics of cholesteric liquid crystals (CLCs) is of particular interest. In the papers [41][42][43][44][45][46][47][48][49][50] the results of a theoretical and experimental study of the magneto-optical properties of CLCs are presented. Moreover, in the papers [51][52][53][54] the existence of MIT and MIA was demonstrated.…”