From: David J Taylor on
"Kennedy McEwen" <rkm(a)nospam.demon.co.uk> wrote in message
news:wsAzJECmeCZMFwmG(a)kennedym.demon.co.uk...
[]
> See this before letting anyone "play" with your cheap green laser
> pointer.
>
> http://www.nist.gov/customcf/get_pdf.cfm?pub_id=906138
[]
> The document link above explains some simple tests to at least check the
> 808nm output from a GLP using a CD-ROM and a webcam.
> --
> Kennedy

As someone who used to work with NdYAG lasers at 1064nm, with outputs
measured in mega-joules rather than milli-watts, I recall how seriously
the chance of eye damage was taken. Thanks for the pointer to that
document - interesting as a description of how the devices work as well as
for the warning it provides.

Cheers,
David