Figure 5
From: Reconstruction of non-error magnetic hologram data by magnetic assist recording
Schematic illustration of the optical setup for collinear and two-beam holography. A pulsed laser (λ = 532 nm and a pulse width of 50 ps) is used for recording and reconstructing. The CW laser (λ = 633 nm) is used to position the recording media at the focal length of the objective lens. In the collinear interference system, the recording pattern modulated with a DMD is divided into two parts: the signal part and the reference parts, and only the reference parts are used for reconstruction. DMD: Digital mirror device; HWP: Half-wave plate; QWP: Quarter-wave plate; PBS: Polarizing beam splitter; DBS: Dichroic beam splitter; HM: Half mirror.
