No abstract

We demonstrate that a time of flight (TOF) camera can be used to perform range selective temporal-heterodyne frequency-modulated continuous wave digital holography (TH FMCW DH). The modulated arrayed detection of a TOF camera allows efficient integration of holograms at a selected range with range resolutions significantly less than the optical system’s depth of field. TH FMCW DH also allows for on-axis geometries to be achieved, where background light not at the internal modulation frequency of the camera is filtered out. Range selective TH FMCW DH imaging was achieved for both image holograms and Fresnel holograms using on-axis DH geometries. A 2.39 GHz FMCW chirp bandwidth resulted in a DH range resolution of 6.3 cm.

No abstract

TUESDAY AFTERNOON / CLEO 2002 / 197 modulator up to 3 cm long. While the applied voltage between the two electrodes is 100 V, the voltage difference between the upper and lower surfaces of the EO active SAS layer (0.5 pm thick) is about 4.15 V. For a 1 cm long EO modulator with 5 V driving voltage, the equivalent driving voltage for a longitudinal EO modulation configuration is about 4.2 kV.