Hi Jack,

It should be 532 nm; depending on whether or not the infrared
component is blocked, and what the IR sensitivity of your system is,
there may also be emission at 808 nm.

Some spectra are here:

http://home.att.net/~ledmuseum/spectra3.htm

The Wikipedia page on lasers also gives some details of what
frequencies are being pumped to produce the green output:
http://en.wikipedia.org/wiki/Laser_pointer

Hope this helps,

Eric


On Jul 14, 2009, at 12:54 PM, Jacques Savard wrote:

> somebody in a group of interferometer try to use a green laser
>
> but do not know anything about specto
>
> if somebody here can make a spectro of a green laser and send it to me
>
> I know howto but do not have a such green laser to do the graph
>
> the problem we have is
> we do not know the real frequency and force of each composition
>
> it is something like 522nm.or 800
>
> thank in advance
>
> jack 47'N 71'W
>
>