[time-nuts] Photodiodes for high frequency OPLL

[Attila Kinali]

On Mon, 1 Apr 2013 14:28:49 +0100
Wolfgang <timenuts at triplespark.net> wrote:

> On Saturday 30 March 2013, Attila Kinali wrote:
> > So far, i figured out that PIN photodiodes can go up to several 100MHz
> > transition frequency and avalanche photodiodes are available up to 2GHz.
> > The only photodiodes that go higher are those for the telecom range
> > at 1-1.5um, which is a bit low for my needs.
> >
> Took me about 15 Seconds of googling to find this: 
> 
> http://search.newport.com/?x2=sku&q2=818-BB-45
> 
> Biased Photodetector, 400-900nm, GaAs, 12.5 GHz, for $ 940

Yes. I found these as well. There are tons of such photodetectors,
but their price is almost always above 1000USD. I'm doing this on
my own and thus am a little bit constraint on money. Beside i hope
to get the whole thing done for under 2000USD. 

Hence i hope to be able to use some of the shelf photodiodes and
build the electronics myself.

			Attila Kinali

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