A new type of opto-optical modulation effect in nematic liquid crystals is experimentally observed. The transmitted intensity of a He-Ne laser beam passing through a liquid crystal sample while applying a dc voltage is modulated by illuminating the sample with a xenon flash lamp pulse. The response time is fast, of the order of several milliseconds. The modulated state lasts for about 500 ms. A modulated intensity of light as large as ten times the unmodulated one is obtained. The physical origin of this effect is also discussed.
No takes yet. Share an insight, caveat, or question.
Sugimura et al. (1990) studied this question.
Synapse has enriched 3 closely related papers on similar clinical questions. Consider them for comparative context: