Answers are grounded in this paper and cite their sources.
Electro-optic constant r 22 T of lithium meta-niobate was measured up to 200°C over the wavelength range from 436 to 632.8 mµ with a conoscopic observation. At room temperature, r 22 T was found to be -6.4×10-12 m/v at 632.8 mµ and to decrease with decreasing wavelength. It exhibited a clear decrease above 100°C and the temperature dependence was discussed in connection with ferroelectric polarization.
No takes yet. Share an insight, caveat, or question.
Iwasaki et al. (1967) studied this question.
Synapse has enriched 10 related papers. Consider them for comparative context: