R. B. da Rocha Freire
Papers
1
Total Citations
2
H-Index
1
About
R. B. da Rocha Freire is a researcher specializing in optical information processing, holography, and photonic encryption. Their most notable contribution lies in the innovative use of digital holographic moiré patterns for secure numerical code generation, as demonstrated in their 2014 paper. By superimposing two sinusoidal gratings with slightly different pitches in a Bi₁₂TiO₂₀ photorefractive crystal, they developed a method to transform low-frequency moiré fringe patterns into robust optical numerical codes. This work bridges classical interferometry with modern cryptographic applications, offering a novel approach to data security. While their citation count of 2 reflects a niche but foundational contribution, the technique’s potential for advancing optical encryption and secure communications underscores its significance. Freire’s research exemplifies how fundamental optical phenomena can be repurposed for cutting-edge technological challenges, making their work a valuable reference for students and researchers exploring the intersection of holography, pattern recognition, and information security.
Research Focus
Key Achievements
Top Papers
- 1Digital holographic moiré pattern for optical numerical code generation2 citations · 2014