OBSERVATION OF ELECTRO-OPTIC AND ELECTROABSORPTION MODULATION IN A LANGMUIR-BLODGETT FILM FABRY-PEROT ETALON

Electro-optic and electroabsorption modulation by use of a Langmuir–Blodgett (LB) film-based Fabry–Perot etalon is reported. The modulation was found to be dominated by linear effects in the film. The percentage change in transmission was 15% for electro-optic and 30% for electroabsorption modulation at an rms drive voltage of 53 V. The effective linear electro-optic coefficient of the LB film was 13 pm V−1 at 633 nm for s-polarized light. We believe that this is the highest value reported to date for thick LB films.