Birefringence changes induced by thermal cycling in lithium niobate
Dieter Jundt,
Matthew Whittaker
Abstract:Lithium niobate exhibits slow refractive index drift after temperature excursions typical in device manufacturing. Such drift can degrade performance in certain devices. We analyze the birefringence changes in a range of temperatures to measure the magnitude and rate of change. Experiments were conducted by first annealing congruently grown, magnesium doped, and lithium-enriched crystals at a temperatures between 95oC and 215oC. Subsequent optical evaluation was performed between 95oC and 122oC using a table-t… Show more
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