Abstract
Guided-wave properties and magneto-optical mode conversion efficiencies were measured for LPE-grown YbPrBiGaIG films with different growth temperatures. Nearly 100% TETM mode conversion was reached by compensation effect of the film birefringence on the phase mismatch between TE and TM waves. The contribution of “growth-induced birefringence” with the magnitude of 3∼4×10-4 was observed in addition to the stressinduced one. Together with the high magneto-optical coupling constants in LPE-grown Bi substituted iron garnet films, the positive sign of the growth-induced birefringence is highly favorable for nonreciprocal guided-wave devices. The coupling constants are 13.3 rad/cm in the Faraday configuration and 6.5 rad/cm in the Voigt configuration for the phase-matched film.
