D. V. G. L. N. Rao

TL;DR: In this article, the authors measured third-order, nonlinear optical susceptibility χ(3) for a series of tetrabenzporphyrins in solution in tetrahydrofuran at 532 nm using degenerate four-wave mixing with picosecond pulses and obtained values of molecular second hyperpolarizability 〈γ〉.

TL;DR: It is observed that the group velocity of light is reduced to an extremely low value of 0.091 mm/s in a biological thin film of bacteriorhodopsin at room temperature, indicating high energy efficiency.

TL;DR: In this article, a large enhancement of photoanisotropic effects is demonstrated in thin films of the biomaterial Bacteriorhodopsin by using two exciting beams of orthogonal polarization.

TL;DR: In this paper, phase contrast imaging is performed for live biological species using photothermal induced birefringence in dye doped liquid crystals using typical 4-f configuration, when liquid crystal cell is at back focal plane of Fourier lens, low spatial frequencies at center of the Fourier spectrum are intense enough to induce local liquid crystal molecules into isotropic phase, whereas high spatial frequencies on the edges are not intense enough and remain in anisotropic phase.

TL;DR: In this paper, a nonvolatile grating using an azobenzene polymer film with polarized two color beams was demonstrated, which can be read repeatedly without volatility with the same wavelength as the writing beam.