Picosecond all-optical logic gate in a nonlinear organic étalon
Abstract
An all-optical logic gate has been demonstrated in a nonlinear organic étalon using femtosecond laser pulses. The logic gate consists of a guest-host organic thin film, 7-[4-[(4-hexyloxyphenyl)azo](naphthyl)azo-(2,3-dihydro-1,3-dimethyl-2-octyl)] perimidine doped in poly(methyl methacrylate), sandwiched between two highly reflective mirrors. It shows a subpicosecond switch-on time and a switch-off or recovery time that has a fast, ≂4 ps component and slower components. A maximum contrast ratio of ≂2 between the switch-on and switch-off states of the optical gate was obtained. The nonlinear index of refraction is also measured from this Fabry-Perot interferometer to be Δn=0.005.
- Publication:
-
Applied Physics Letters
- Pub Date:
- December 1990
- DOI:
- 10.1063/1.103857
- Bibcode:
- 1990ApPhL..57.2399W
- Keywords:
-
- Fabry-Perot Interferometers;
- Logic Circuits;
- Nonlinear Optics;
- Optical Materials;
- Organic Materials;
- Picosecond Pulses;
- Ultrashort Pulsed Lasers;
- Absorption Spectra;
- Etalons;
- Molecular Structure;
- Optical Bistability;
- Thin Films;
- Visible Spectrum;
- Optics