Volume 90, Issue 8, 15 October 2001
Index of content:
- LASERS, OPTICS, AND OPTOELECTRONICS (PACS 42)
90(2001); http://dx.doi.org/10.1063/1.1401799View Description Hide Description
The construction and properties of scattering type liquid crystal depolarizers are discussed. The Mueller matrices that describe these devices are measured and compared to ideal depolarizers and ideal linear materials. The present depolarizers do not perform as well as crystal pseudodepolarizers. Nevertheless, when polarized light is incident on one of these devices the polarization of the transmitted light can be uniform to within 5%. These devices have the advantage that they can be made to areas as large as 30–30 cm or larger, are inexpensive, and can be electrically switched off and on. © 2001 American Institute of Physics.
90(2001); http://dx.doi.org/10.1063/1.1403679View Description Hide Description
We present a generalized model for the photochemical cycle of bacteriorhodopsin (bR) protein molecule. Rate equations have been solved for the detailed light-induced processes in bR for its nine states: The complete steady-state intensity-induced population densities in various states of the molecule have been computed to obtain a general, exact, and analytical expression for the nonlinear absorption coefficient for multiple modulation pump laser beams. All-optical light modulation of different probe laser beam transmissions by intensity induced population changes due to one and two modulation laser beams has been analyzed. The proposed model has been shown to accurately model experimental results.