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Optical Damage to LiNbO3 from GaAs Laser Radiation

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2 Author(s)
Harris, E.P. ; IBM Thomas J. Watson Research Center, Yorktown Heights, New York 10598, USA ; Dakss, M.L.

We have observed optical damage to LiNbO3 at room temperature from focused cw GaAs laser radiation at a wavelength of 8450 Å. Visible damage was apparent after a 20-sec exposure corresponding to an energy flux of about 1.2 × 105 J/cm2 and was observed by changes in the diffraction pattern of the crystal. This is believed to be the first report of such damage in the potentially useful wavelength range of 0.8 to 0.9 µm. No damage was observed at a wavelength of 9030 Å in a similar but pulsed-laser experiment.

Note: The Institute of Electrical and Electronics Engineers, Incorporated is distributing this Article with permission of the International Business Machines Corporation (IBM) who is the exclusive owner. The recipient of this Article may not assign, sublicense, lease, rent or otherwise transfer, reproduce, prepare derivative works, publicly display or perform, or distribute the Article.  

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IBM Journal of Research and Development  (Volume:13 ,  Issue: 6 )