TUNABLE OPTICAL MICROCAVITY FOR MODULATION AND GENERATION OF SPECIFIC RADIATION

摘要

The present invention relates to a tuneable optical microcavity, characterised in that it comprises electrodes (12) on substrates (11), wherein the electrodes are comprised in the structure of dielectric or metal mirrors (13), or each of the electrodes has at least one dielectric or metal mirror (13) on it, or the electrodes are semitransparent metal mirrors (13), wherein the mirrors are preferably located at a separation being a multiple of ½ lambda, where lambda is the central wavelength of the cavity mode, the cavity between the mirrors being filled with material (15) that changes the effective refractive index under the influence of external fields, preferably such as electric, magnetic field, thermal and mechanical stress.