Electroholographic tunable volume grating in the g44 configuration

Assaf Bitman*, Noam Sapiens, Lavi Secundo, Aharon J. Agranat, Guy Bartal, Mordechai Segev

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

37 Scopus citations


The g44 grating is an electroholographic transmission grating in which the applied field is perpendicular to both the grating vector and the wave vector of the incident beam. It is argued that in this configuration the incident beam traverses through a periodically rotating index ellipsoid. It is shown that in the g44 configuration the Bragg condition is fulfilled for a specific value of the applied field and for a diffracting beam polarization that is perpendicular to that of the incident beam. Consequently, the g44 grating can be used as an electrically controlled filter. Tunability of 7 nm is demonstrated in a 2 mm thick grating.

Original languageAmerican English
Pages (from-to)2849-2851
Number of pages3
JournalOptics Letters
Issue number19
StatePublished - 1 Oct 2006


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