Pr. Sreedhar et al., DISPLACEMENT AND SLOPE MEASUREMENTS USING IMAGE PLANE HOLOGRAPHY WITHA BATIO3 CRYSTAL, Optics and Laser Technology, 29(3), 1997, pp. 111-115
Photorefractive crystals have gained importance as a recording medium
due to the possibility of real-time operations. Various real-time holo
graphic and interferometric techniques have recently been proposed, ex
ploiting salient features of different photorefractive crystals, In th
is paper we propose and demonstrate a two-beam illumination method, em
ploying a BaTiO3 crystal, for real-time displacement measurement and a
single beam ilumination method for real-time slope measurement. (C) 1
997 Elsevier Science Ltd.