Transient diffraction efficiency of a D96N mutant bacteriorhodopsin film

Serey Thai, Q. Wang Song

Research output: Contribution to journalConference Articlepeer-review

1 Scopus citations


A three-laser-beam technique is developed to study the transient diffraction efficiency of M-state dynamic phase holograms in a D96N mutant bacteriorhodopsin film (BR). A CW beam from 532 nm doubled Nd:YAD laser is used to pump BR molecules from B-state to photoexcited M-state. Then the M-state absorption laser 413-nm wavelength from a Krypton Ion laser is used to write holographic gratings in the excited M-state. The writing process also depletes M-molar concentrations. This process offers the advantages of better modulation and faster response. The reading is done with a 680 nm laser, which is far away from the absorption bands to ensure a negligible erasing effect on the gratings written in the film, resulting a pure phase hologram with high efficiency. A maximized transient peak diffraction efficiency approaches a saturated value when the ratio of write to pump intensity is approximately unity.

Original languageEnglish (US)
Pages (from-to)206-214
Number of pages9
JournalProceedings of SPIE - The International Society for Optical Engineering
StatePublished - 1998
Externally publishedYes
EventProceedings of the 1998 Conference on Advanced Optical Memories and Interfaces to Computer Storage -
Duration: Jul 22 1998Jul 24 1998

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Computer Science Applications
  • Applied Mathematics
  • Electrical and Electronic Engineering


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