A process and photoactive media for holographic recording and micro/nanofabrication of optical and bio-optical structures via the simultaneous absorption of two-photons by the photoactive media to induce a simultaneous photochemical change in regions of constructive interference within a holographic pattern is disclosed. The photochemical process of polymerization resulting from the simultaneous absorption of two-photons may be used for the microfabrication of micro and nanoscaled features, holographic data storage, and the formation of switchable diffraction gratings. In a specific example, a two beam holographic configuration is used in a set-up (100) with various optics (110, 112, 114) for dividing a single beam and impinging the two beams on a sample plane (118) to interfere with one another.
HOLOGRAPHIC RECORDING AND MICRO/NANOFABRICATION VIA ULTRAFAST HOLOGRAPHIC TWO-PHOTON INDUCED PHOTOPOLYMERIZATION (H-TPIP)