Photorefractive-index grating formed by nanosecond optical pulses in BaTiO/sub 3/

Journal Article · Thu Oct 01 00:00:00 EDT 1981 · Opt. Lett.; (United States)

DOI:https://doi.org/10.1364/OL.6.000475· OSTI ID:5944660

Lam, L K; Chang, T Y; Feinberg, J; Hellwarth, R W

We write and read a refractive-index grating in a photorefractive crystal BaTiO/sub 3/ with a single 20-nsec laser pulse at 532 nm. The grating formed is erasable with similar pulses. Diffraction efficiency decreases exponentially with the cumulative erasing light energy for 20-nsec pulses at intensity levels of 5--30 MW/cm/sup 2/. Optical energies required to write and erase gratings with 20-nsec pulses are about an order of magnitude larger than for millisecond-to-second-long pulses at 515 nm, even though the grating is still formed by a one-photon process.

• Research Organization: Electronics Sciences Laboratory SSC 303, University of Southern California, Los Angeles, California 90007
• OSTI ID: 5944660
• Journal Information: Opt. Lett.; (United States), Vol. 6:10
• Country of Publication: United States
• Language: English

Related Subjects

47 OTHER INSTRUMENTATION
GRAZING
FABRICATION
BARIUM COMPOUNDS
CRYSTALS
DIFFRACTION
EFFICIENCY
LASER RADIATION
PULSES
REFRACTIVITY
TITANATES
ALKALINE EARTH METAL COMPOUNDS
COHERENT SCATTERING
ELECTROMAGNETIC RADIATION
OPTICAL PROPERTIES
OXYGEN COMPOUNDS
PHYSICAL PROPERTIES
RADIATIONS
SCATTERING
TITANIUM COMPOUNDS
TRANSITION ELEMENT COMPOUNDS
440300* - Miscellaneous Instruments- (-1989)