[Laser] How much power

[Jim Moss]

>From what I recall,
The IR diodes in old R/W optical drives were 20-30mW output.
I seem to recall reading an article about the newer R/W CD drives at about 35mW.

Not sure about DVD R/W drives.

Jim


----- Original Message ----
From: Chuck Hast <wchast at gmail.com>
To: Free Space LASER Communications <laser at mailman.qth.net>
Sent: Wednesday, June 6, 2007 8:51:58 AM
Subject: Re: [Laser] How much power


On 6/6/07, Vlacilik, Radovan <Radovan.Vlacilik at siemens.com> wrote:
> Hi Chuck,
>
> I have the same problem with DVD RW Laser Diodes. How much current I can
> push through it?
>
> I made a test, which you can find here:
> http://radosan.wz.cz/opto/technika/ld_experiments/
>
> Does anyone have answers to my questions?
>
Yes, you are in the same place we are. We get bad units that have a good
diode, pull the diode and see a number on it, but it does not trace to anything
and there is not technical info on the unit. If we could at least
trace the numbers
to some source it would help. Also running the diode into that flat area usually
will damage the mirrors, that is what I have found out, once the mirrors take
a whack it is down hill from there.

-- 
Chuck Hast  -- KP4DJT --
To paraphrase my flight instructor;
"the only dumb question is the one you DID NOT ask resulting in my going
out and having to identify your bits and pieces in the midst of torn
and twisted metal."
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