Korea Research Institute of Chemical Technology

Kyungpook National University Industry-academic Cooperation Foundation

Ae-Jin Yeon

Hak-Rin Kim

Kyung-Il Joo

Jae-Won Ka

Mi-Hye Yi

Disclosed are a holographic writing method and apparatus capable of re-writing (updating) holographic information and quickly writing the holographic information with high efficiency. In an embodiment, a holographic writing method for writing holographic information by emitting a beam at a holographic recording medium containing a photo-responsable polymer material having photoisomerization characteristics that change a molecular structure thereof by absorbing light energy, writes the holographic information by using a writing wavelength different from a maximum absorption wavelength in a light absorption spectrum of photoisomer molecule structures of the holographic recording medium. The maximum absorption wavelength is a wavelength at which light absorption rate is maximum in the light absorption spectrum. A difference between the light absorption rates of the photoisomer molecule structures at the writing wavelength is less than a difference between the light absorption rates of the photoisomer molecule structures at the maximum absorption wavelength.

Growing community of inventors

Gyeongsangnam-do, South Korea

Ae-Jin Yeon