FMCW-ディジタルホログラフィによる直交直線偏光の参照光を用いた偏光分布の解析

抄録

Frequency-Modulated Continuous-Wave (FMCW) technique has been introduced into digital holography (DH) by using an injection-current-induced frequency modulation of a laser diode (LD) as a light source. Since the frequency of beat signals observed in time series holograms captured by a high speed digital camera depends on the optical path length difference between the reference and the object light waves, the introduction of FMCW technique into DH makes it possible to multiple record the object information in time-frequency domain. By the technique, a polarization state of the object wave transmitting through a PMMA sample was investigated using the proposed technique in which the object wave interfered with two orthogonally linearly polarized reference waves having the different optical path lengths.