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Derived various methods for small viewing angle tomographic reconstruction which provides three-dimensional information for beams that pass through the entire specimen with the cumulative effects along the beam path recorded on a hologram. Scanning the laser probe through the specimen provides data for reconstructing three-dimensional information along the optical propagation depth axis. Small angle reconstruction is now possible with scan angles that are less than 180° and approaching the numerical aperture or cone angle of the beam probing the specimen. This novel reconstruction method allows for three-dimensional information to be obtained with no scanning mechanisms in some circumstances and restricted scanning about a limited FOV (Field-of-View) in other circumstances. Current applications for limited viewing angle three-dimensional tomographic reconstruction from a single viewpoint window are: measurement of fluid temperature using the CSLH (Confocal Scanning Laser Holography)..