holography

Definition: (1) Study of the science of holograms. (2) Technology of producing and using holograms. * Production usually requires the following basic conditions to be met: (a) coherent light source e.g. laser (b) optical bench for alignment of components (c) means to separate the original beam into a reference (unmodulated) beam and the object beam (to be modulated by the object) (d) total and complete elimination of all noise from vibration or movement by using massive vibration-absorbing rigs or using flash (pulse-laser) exposure (e) recording medium with resolving power sufficient to record interference fringes.

Related Terms: hologram

Previous Term: holographic optical element  Next Term: hot mirror