|Title||Confocal imaging through scattering media with a volume holographic filter|
|Publication Type||Journal Article|
|Year of Publication||2000|
|Authors||M Balberg, G Barbastathis, S Fantini, and DJ Brady|
|Journal||Smart Structures and Materials 2005: Active Materials: Behavior and Mechanics|
|Pagination||69 - 74|
The use of a volume holographic filter as collector element in a confocal system imaging through scattering (turbid) material is described. We show that the penetration depth of the volume holographic system is de-coupled from the scatter noise discrimination properties, and is potentially more advantageous than the traditional confocal microscope. Since the volume-holographic filter is a matched-filter, the penetration depth is dependent on the mismatch of the refractive index of the sample being imaged relative to the recording conditions. We present a method to overcome this limitation based on using a pre-compensating index matching film during the recording of the volume hologram. An improvement of the penetration depth is shown experimentally.
|Short Title||Smart Structures and Materials 2005: Active Materials: Behavior and Mechanics|