Magnetic-field tunable defect modes in a photonic-crystal/liquid-crystal cell.
Light transmission spectrum of a multilayer photonic crystal with a central liquid-crystal defect layer placed between crossed polarizers has been studied. Transmittance was varied due to the magnetically induced reorientation of the nematic director from homeotropic to planar alignment. Two notable effects were observed for this scheme: the spectral shift of defect modes corresponding to the extraordinary light wave and its superposition with the ordinary one. As a result, the optical cell allows controlling the intensity of interfering defect modes by applied magnetic field.
Zyryanov
Victor Ya
VY
Kirensky Institute of Physics, Krasnoyarsk Scientific Center, SB RAS, Krasnoyarsk, Russia. zyr@iph.krasn.ru
Myslivets
Sergey A
SA
Gunyakov
Vladimir A
VA
Parshin
Alexander M
AM
Arkhipkin
Vasily G
VG
Shabanov
Vasily F
VF
Lee
Wei
W
D016477:Artifacts; D004574:Electromagnetic Fields; D050866:Liquid Crystals / Q000737:chemistry* / Q000528:radiation effects*; D008420:Manufactured Materials / Q000528:radiation effects*; D008422:Materials Testing; D012031:Refractometry