[Laser] What do you guys need???

Thu, 10 Jan 2002 22:53:49 -0800

I'll check tomorrow at work.  I don't believe that spreadsheet was
designed for APDs, though.  You can email its author with any questions,
BTW.

Yeah - I had a real quick look at the AO-40 laser beacon spec the other
day - didn't look real promising.  Do you know what NEP you need?
And the beamwidth sounded 'preliminary' - did they do any actual
measurements
before launch of that, and also of the output power?

Steve WA6EJO

Joe Fitzgerald [ [email protected] ] wrote:
> 
> How about the specification for the shunt resistance of your 020-72-60-541
> APD?  I was fooling around with the spreadsheet you told us about the other
> day, and could not find this spec in your catalog.
> 
> Also, your Perkin Elmer talks about using APD's in Geiger mode - above the
> breakdown voltage with max current limited to less than 50 microamps.  Can
> your APD's be run in this mode and if so can we use this for lasercom?  I am
> working on a receiver for the laser on AMSAT OSCAR 40,  and have precious
> few photons per bit to deal with.
> 
> -Joe KM1P
> 
> ----- Original Message -----
> From: "Steve J. Noll" <[email protected]>
> To: <[email protected]>
> Sent: Thursday, January 10, 2002 9:25 PM
> Subject: [Laser] What do you guys need???
> 
> > Hi Guys:
> >
> > I've been trying to figure out how I can help the group
> > and promote Amateur Radio Laser experimenting...
> >
> > As you may know I was pretty active big-time long ago, but
> > have been out of it for quite a while.  There's no one here
> > to play with and I kinda get my fill of it at work.
> >
> > I've been working at Advanced Photonix - a major silicon
> > photodiode manufacturer for the last ten years and am now
> > head of test engineering and manufacturing engineering.
> > So, I have access to certain "things."
> >
> > I wish I could give away stuff like our large area avalanche
> > photodetectors, but unfortunately that's out of the question -
> > they are quite expensive.  But, I could characterize your
> > photodiodes for you - like for responsivity, NEP, rise time,
> > dark current, etc., and I might be able to come up with some
> > PIN photodiode 'blems'.
> >
> > What is there a need for?
> >
> > 73,
> >
> > Steve WA6EJO
> >
> > --
> > Steve J. Noll | Ventura California | [email protected]
> >               | The Used Equipment Dealer Directory:
> >               | http://www.big-list.com
> >               | The Peltier Device Information Site:
> >               | http://www.peltier-info.com
> > _______________________________________________
> > Laser mailing list
> > [email protected]
> > http://mailman.qth.net/mailman/listinfo/laser
> >
> 
> _______________________________________________
> Laser mailing list
> [email protected]
> http://mailman.qth.net/mailman/listinfo/laser

-- 
Steve J. Noll | Ventura California | [email protected]
              | The Used Equipment Dealer Directory:
              | http://www.big-list.com
              | The Peltier Device Information Site:
              | http://www.peltier-info.com