[Laser] What do you guys need???
W2MXW
[email protected]
Fri, 11 Jan 2002 00:41:56 -0500
Can you test (or recommend a procedure for doing so at home) PDs for
degradation by radiation exposure? (I just had ordered a few and they are
being sent via USPS Priority Mail; I wonder if they are going to get
irradiated and if so will this degrade them, and can they be tested for
degradation?)
I'm not sure if they are/have been irradiated or to what extent USPS is
doing this but if they are I heard it would be by electron beam - can this
method damage Si PIN PDs?
What would the degradation mode be, if so: would the dark current increase,
would there be deleterious effects on the lattice/dopant and/or would noise
figure go thru the roof?
73 es thanks de Jonathan W2MXW
At 06:25 PM 1/10/02 -0800, you wrote:
>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]
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