photorefractive

[foh-toh-ri-frak-tiv]

adjective

1. of or relating to a change in the index of refraction by spatial variations of the light intensity, as in a laser.

Example Sentences

Ophthalmologists might offer surgical procedures to fix presbyopia, such as corneal inlays, LASIK, photorefractive keratectomy and lens implants.

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Lahav and colleagues’ solution was to shine a repetitive string of such pulses into a crystal of the photorefractive material strontium barium niobate, which responded to the power averaged over many pulses to create a self-guided beam.

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It has been known for more than 20 years that self-guided light beams can be generated in photorefractive materials5.

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The light from the sample is collected in a photorefractive crystal as a hologram with the use of the reference beams, and then read out to create a time-reversed image; only the light that was encoded with ultrasound is unaffected by multiple scattering.

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Singapore Armed Forces has doubled the number of candidates available for critical jobs such as pilots, commandos and navy drivers over the past five years by paying for the S$2,000 photorefractive keratectomy surgery for shortsighted personnel, the newspaper reported today.

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