Download or read book Bragg Diffraction of Light from Magnetostatic and Magnetoelastic Waves written by David Abbott Wilson and published by . This book was released on 1970 with total page 172 pages. Available in PDF, EPUB and Kindle. Book excerpt: Theoretical and experimental investigations have been conducted on the use of Bragg and Raman-Nath diffraction of laser light from magnetostatic and magnetoelastic waves, propagating in Yttrium Iron Garnet (YIG). YIG is opaque to visible light, but highly transparent in the near infrared, and a light wavelength of 1.15 micrometers was therefore used. The properties of light diffraction from plane spin waves were derived, and shown to arise from the same magneto-optic effect which causes optical Faraday rotation. The linear magneto-optic coefficient m sub l, relating the change in dielectric constant to the rf magnetization components of the spin wave, was theoretically found to be 0.0000025/oe at a 1.15 micrometers wavelength. Experiments were carried out both for the purpose of verifying the predicted light diffraction behavior, and in order to use light diffraction as a tool in the study of magnetoelastic wave phenomena. Results are discussed. (Author).