[Laser] Retro-Reflector test
Jens-Peter Gärtner
lev1985 at web.de
Sat May 12 06:25:56 EDT 2007
>Wouldn't a high frequency fm-modulated carrier solve the problem? It
>> >also would give you more flexibility. Perhaps you would like to
>> >transmitt some tv-signals later...
>>
>> No! Using an FM modulation scheme means your detector has to be
>> dumbed down so that it admits the carrier frequency plus the width of
>> the modulating signal (sidebands). The NEP varies (is reduced) by the
>> square of the overall bandwidth-very bad!
That's a point I didn't thought about yet.
How do your keying-amplifiers look like?
Jens, DO7KW
More information about the Laser
mailing list