New Ocular Hazard of Mode Locking in CW Lasers

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Abstract

IN a series of experiments to investigate threshold retinal damage produced by CW helium–neon lasers (wavelength = 632.8 nm), we have found that lasers with identical beam divergence and output powers but different amplifier/cavity parameters produce different amounts of retinal damage. The source of this discrepancy has been traced to mode locking in one of the lasers used.

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SMART, D., MANSON, N., MARSHALL, J. et al. New Ocular Hazard of Mode Locking in CW Lasers. Nature 227, 1149–1150 (1970) doi:10.1038/2271149a0

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