We report on the implementation of an all optical image amplifier by use of two wave mixing based on the photorefractive effect, to a micro-lithographic authentification system. The combination of a computer driven spatial light modulator and a holographic image amplifier enables the parallel engraving of information without the need of previously prepared masks. The necessity for an amplification of the information carrying beam emerges from the fact that the damage threshold of the spatial light modulation device is lower than the energy density required for imprinting the information onto the objects surface.

This work is embedded in a European Growth project, Holographic Authenticity Sensors, GRD1-1999-11078.

© 2003 Optical Society of America

PDF Article
More Like This
Light pulse amplification by photorefractive two-wave mixing

E. Podivilov, B. Sturman, A. Shumelyuk, and S. Odoulov
314 Photorefractive Effects, Materials, and Devices (PEMD) 2003

Photorefractive two-wave mixing for image amplification in digital holography

Nektarios Koukourakis, Nils C. Gerhardt, Martin R. Hofmann, and Yiu Wai Lai
FThBB5 Frontiers in Optics (FiO) 2010

Soliton Profile of the Dynamic Grating Amplitude and its Alteration by Photorefractive Wave Mixing

S. Bugaychuk, R. A. Rupp, G. Mandula, and L. Kovács
404 Photorefractive Effects, Materials, and Devices (PEMD) 2003


You do not have subscription access to this journal. Citation lists with outbound citation links are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
Login to access Optica Member Subscription