Difference between revisions of "Safety goggles"

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(Created page with 'The threshold for eye damage at telecommunications wavelengths is 100mW/cm2. Damage from light at these wavelengths is mostly to the cornea, rather than the retina, which means …')
 
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The threshold for eye damage at telecommunications wavelengths is 100mW/cm2.  Damage from light at these wavelengths is mostly to the cornea, rather than the retina, which means it will heal.  Aligning a fiber will not cause damage, but looking directly into a connector while the laser is on very well may because the intensity is so high.
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Check the UCSB [http://www.ehs.ucsb.edu/units/rad/radrsc/radsaftypdfs/lasersaftyman.pdf laser safety manual] for guidelines on choosing appropriate goggles for your experiment.  In general, there is no need to worry if the power is below:
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* 200mW at 1550nm
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* 10mW at 1310nm
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* 1mW at 1000nm
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The threshold for eye damage at 1550nm and 1310nm is 100mW/cm2.  Damage from light at these wavelengths is mostly to the cornea, rather than the retina, which means it will heal.  Aligning a fiber will not cause damage, but looking directly into a connector while the laser is on very well may because the intensity is so high.

Revision as of 15:35, 18 March 2012

Check the UCSB laser safety manual for guidelines on choosing appropriate goggles for your experiment. In general, there is no need to worry if the power is below:

  • 200mW at 1550nm
  • 10mW at 1310nm
  • 1mW at 1000nm


The threshold for eye damage at 1550nm and 1310nm is 100mW/cm2. Damage from light at these wavelengths is mostly to the cornea, rather than the retina, which means it will heal. Aligning a fiber will not cause damage, but looking directly into a connector while the laser is on very well may because the intensity is so high.