Non-resonant optical rectification in optically active liquids

Inducing Enantiosensitive Permanent Multipoles in Isotropic Samples with Two-Color Fields

“…non-vanishing zero-frequency components of the expected value of the electric dipole operator) normal to the polarization plane and with opposite directions for opposite enantiomers. Indeed, such static electric dipoles have been investigated in the context of optical rectification [24][25][26][27][28], where two excited states close in energy are resonantly excited with monochromatic circularly polarized light. Very recently enantiosensitive static dipoles have also been studied in the context of molecular orientation induced by intense off-resonant light pulses [29][30][31][32].…”

Resonant Optical Rectification in Chiral Molecular Systems: Application to a Three-Level Model

“…Α quantum-mechanical expression for the frequency dependence of the effect is obtained and its magnitude is estimated in absorption bands of a three-level model.PACS numbers: 33.55.Fi, 42.65.ΑrιLinear and nonlinear interactions of an electromagnetic wave with molecules of an isotropic medium induce in them multipole moments which contribute to electric polarization of the system [1]. Out of absorption bands optical rectification (OR) via the second-order susceptibility is forbidden but the fourth-order dipolar electric nonlinearity may cause OR in chiral liquids [2]. However, in absorption bands of optically active molecular system OR is allowed via the imaginary part of the Second-order susceptibility related to electric dipole interaction with the radiation field [3].We consider an isotropic molecular system in which a plane monochromatic light wave with the electric field oscillating with the circular frequency ω, propagates in the z-direction.…”

“…Linear and nonlinear interactions of an electromagnetic wave with molecules of an isotropic medium induce in them multipole moments which contribute to electric polarization of the system [1]. Out of absorption bands optical rectification (OR) via the second-order susceptibility is forbidden but the fourth-order dipolar electric nonlinearity may cause OR in chiral liquids [2]. However, in absorption bands of optically active molecular system OR is allowed via the imaginary part of the Second-order susceptibility related to electric dipole interaction with the radiation field [3].…”

On electric-quadrupole and magnetic-dipole contributions to optical rectification in isotropic media near optical resonance

“…Non-resonant optical rectification is electric-dipole-allowed in optically active liquids and solutions only via the fourth-order electric susceptibility, arising from the nonlinear electric dipole interaction of chiral molecules with the electromagnetic field [17]. However, in absorption bands of optically active molecular systems, optical rectification is also allowed via the imaginary part of the second-order electric susceptibility [15,16,18,19].…”

“…far from optical resonances) for symmetry reasons [15][16][17]. Non-resonant optical rectification is electric-dipole-allowed in optically active liquids and solutions only via the fourth-order electric susceptibility, arising from the nonlinear electric dipole interaction of chiral molecules with the electromagnetic field [17].…”