Frequency-Modulated Continuous-Wave (FMCW) technique has been introduced into digital holography (DH) using aninjection-current-induced frequency modulation of a laser diode (LD) as a light source. Since the frequency of beatsignals observed in the intensity variation of holograms captured by a high speed camera depends on the optical pathlength difference between the reference and the object light waves, the use of FMCW technique in DH can achieveselective reconstruction of an object located at a desired distance. As a preliminary consideration, both experimental andcalculational studies were conducted for selective reconstruction of two objects at different positions. In addition, apolarization state of object wave transmitting through a PMMA sample was investigated using the technique in whichthe object wave interfered with two orthogonally linearly polarized reference waves having the different optical pathlengths.
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