FERROELECTRIC HELICAL LIQUID CRYSTAL MATERIAL AND METHOD FOR REALIZING SECOND HARMONIC ENHANCEMENT THEREFOR

    公开(公告)号:US20250044621A1

    公开(公告)日:2025-02-06

    申请号:US18704933

    申请日:2022-10-30

    Abstract: The present invention discloses a ferroelectric helical liquid crystal material and a method for realizing second harmonic enhancement therefor. By means of the method, a ferroelectric helical liquid crystal with an ultrahigh polarity helical structure is obtained by doping chiral molecules with ferroelectric nematic phase liquid crystals, and a dielectric constant of the ferroelectric helical liquid crystal is 104. This type of liquid crystal material has a superstrong nonlinear optical effect and can excite high-intensity second harmonic waves (for example, a nonlinear coefficient of the liquid crystal material is equivalent to that of a LiNbO3 nonlinear (NLO) crystalline material). Based on adjustability of a periodical helical structure of the ferroelectric helical liquid crystal, a molecular pitch of the ferroelectric helical liquid crystal is tuned by means of a concentration of chiral molecules (i.e., a polarization period is regulated).

Patent Agency Ranking