Fast photorefractive response in B_12SiO_20 in the near infrared
2000; Optica Publishing Group; Volume: 25; Issue: 17 Linguagem: Inglês
10.1364/ol.25.001261
ISSN1539-4794
AutoresErik Raita, Oleg V. Kobozev, Alexei A. Kamshilin, Victor V. Prokofiev,
Tópico(s)Advanced Fiber Laser Technologies
ResumoThe polarization self-modulation effect was applied for effective measurement of the characteristic response time of nominally pure Bi(12)SiO(20) (BSO) at wavelengths of 810 and 980 nm. Owing to oxygen deficiency in the crystal lattice, the BSO crystals showed unusual photorefractive sensitivity and remarkable operation speed in the near-infrared spectral region. A response time of 130 ms was measured at 810 nm, and a response time of 540 ms was measured at 980 nm, with incident intensities of 110 and 200mW/cm(2), respectively. To our knowledge, this is the first experimental evidence of a subsecond response in the infrared for a nonsemiconductor photorefractive material.
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