title: Effect of recording-beam ratio on diffraction efficiency of polarization holographic gratings in dye-doped liquid-crystal films.
abstract: The +1 order diffraction of polarization holographic gratings generated by two linear orthogonally polarized writing beams in dye-doped liquid-crystal films were increased by using two recording beams with unequal intensity. The maximum diffraction efficiency of the polarization holograms in our experimental sample can reach 23% when the intensity ratio of two recording beams is 7:1, and this value is almost triple that when the intensity ratio of two recording beams is 1:1.
authors.affiliation: Graduate Institute of Photonics, National Changhua University of Education, No. 1, Jin De Road,Changhua 500, Taiwan. wcsu@cc.ncue.edu.tw
authors.forename: Wei-Chia
authors.initials: WC
authors.lastname: Su
authors.forename: Chi-Yen
authors.initials: CY
authors.lastname: Huang
authors.forename: Jin-Yi
authors.initials: JY
authors.lastname: Chen
authors.forename: Wei-Huang
authors.initials: WH
authors.lastname: Su