Re: Current Controller for Laser Diode

From: Ken Smith (kensmith_at_green.rahul.net)
Date: 02/23/05 

Date: Wed, 23 Feb 2005 02:48:30 +0000 (UTC)

In article <421b5997$0$3401$5402220f@news.sunrise.ch>,
Rene Tschaggelar <none@none.net> wrote:
[...]
>A grating and a lens doesn't cost much and are quickly mounted.
>Movement either by a piezo, or an RC servo. Yes, the antireflex
>coat is not for free but doesn't cost that much either.
>At least you can achieve single line emission under the
>gain profile of the few nm.

You've got my interest. How much for the needed hardware?

NIST is trying for a atomic clock that competes with the OCXOs. They've
got quite a ways to go yet on the development.

BTW: in the NIST system, they have to modulate the light at the 9GHz
frequency because they are using first order coherent population trapping.
Making a 9GHz cavity that small would be trouble some. Doubly so because
you really want a wide peak on it so you don't get pulling. 

-- 
--
kensmith@rahul.net   forging knowledge

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