Abstract
AbstractResults are presented on near‐forward Raman scattering from low‐frequency polaritons in LiIO3 obtained by the photographic method using an iodine filter for attenuation of the laser light before it enters a spectrograph. Our experiment shows that the value of dielectric transition strength of the 238 cm−1 phonon mode measured by Otaguro et al. must be corrected. The clamped dielectric constant (ϵz = 5.9) was determined from polariton measurements at frequencies below the lowest transverse mode. This value is compared with those published elsewhere.
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