Optical bistability in the formation of spontaneous gratings in photosensitive AgCl–Ag waveguide films

V. I. Lymar V. N. Karazin Kharkiv National University
E. D. Makovetsky V. N. Karazin Kharkiv National University

Keywords: light-sensitive materials, waveguide film, AgCl, Ag, waveguide mode, periodic structure, optical bistability

Abstract

An experiment was conducted to create periodic structures in light-sensitive waveguide AgCl–Ag films on glass surface under irradiation by He-Ne laser beam (λ = 632.8 nm). So-called spontaneous gratings were formed from Ag granules within AgCl film on the interference pattern created by the beam and scattered waveguide modes. These gratings developed due to positive feedback: diffraction efficiency of spontaneous grating and intensity of waveguide mode are mutually amplified for account of the beam energy. Doubling of the spontaneous grating diffraction reflex has been found, and optical bistability has been shown to occur based on spatial analogy to stimulated temporal oscillations of a harmonic oscillator.

Downloads

Download data is not yet available.

References

H.M. Gibbs Optical Bistability: Controlling Light with Light. – Academic Press (1985). – 471 p.

G.I. Stegeman. Overview of Nonlinear Integrated Optics, in “Nonlinear Waves in Solid State Physics”, ed. by A.D. Boardman, M. Bertolotti, T. Twardowski, Springer, NATO ASI Series, 247, (1990), pp. 463–494.

L. A. Ageev, V. B. Blokha, V.K. Miloslavsky. Quantum Electronics (Kyiv), issue 38, p.28–56 (1990) [in Russian].

L.A. Ageev, V.K. Miloslavsky. Opt. Engin., 34, 4, 960–972 (1995).

M.J. Adams. An Introduction to Optical Waveguides. – Wiley (1981). – 401 p.

H.A. Haus, Waves And Fields In Optoelectronics. – Prentice-Hall, New Jersey (1984), 402 p.