Currently, to produce a hologram, according to the researchers, the technique involves splitting a laser pulse into two beams, which is complicated. The new technique uses a single-pulse laser and repositions the surface the hologram is being printed on.
The new technique can be used on a variety of materials -- the scientists demonstrated the process on a 2D signature -- like those on a driver's license -- as well as on a 3D coin. The researchers believe that printable holograms might open up the door for smartphones to read data from a hologram.
- "This work can lead to further applications, such as holographic data storage, optical sensors, and printable optical devices," researcher Haider Butt said. "Using smart phone cameras and applications, such colorimetric changes can be read, interpreted, and communicated remotely."
New Production Method Clears the Way for Holographic Data Storage
8. 7. 15 by Kif Leswing