title: Laser scanning microscope for pyroelectric display in real time.
abstract: The pyroelectric probe technique is now capable of inspecting a 100 x 100-microm TGS area in a few seconds with a 2-microm limit of resolution. The method is described in detail, and a calculation of the pyroelectric signal is presented. The longitudinal growth of a cylindrical domain is mathematically simulated and also the variation of pyroelectric signal at domain boundary. These calculations are in good accordance with experiment. With a 200-kHz chopping frequency only a thin layer of the crystal surface is inspected (thermal diffusion length l = 0.64 microm), while the lateral limit of resolution is given by the laser spot radius (R(1) = 1 microm). It is possible to decrease this limit by using a smaller laser spot, but the chopping frequency ought to be increased.
authors.forename: A
authors.initials: A
authors.lastname: Hadni
authors.forename: J M
authors.initials: JM
authors.lastname: Bassia
authors.forename: X
authors.initials: X
authors.lastname: Gerbaux
authors.forename: R
authors.initials: R
authors.lastname: Thomas