title: Hologram formation with red light in methylene blue sensitized dichromated gelatin.
abstract: The spectral sensitization of hardened dichromated gelatin to red light is carried out using methylene blue as sensitizer. The sensitized dichromated gelatin plate can be stored for over 1 month in an ammonia atmosphere without loss of photosensitivity. Holograms recorded in the sensitized dichromated gelatin using a He-Ne laser have high diffraction efficiency and low noise if they are swelled at a temperature near the gelatin gel melting point during development processing. Maximum diffraction efficiency has been found to be as high as 88%. The energy required to obtain 80% diffraction efficiency is 150-400 mJ/cm(2).
authors.forename: T
authors.initials: T
authors.lastname: Kubota
authors.forename: T
authors.initials: T
authors.lastname: Ose
authors.forename: M
authors.initials: M
authors.lastname: Sasaki
authors.forename: K
authors.initials: K
authors.lastname: Honda