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Infrared laser for communication

Pini Deri

May 11, 2014
4
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May 11, 2014
Messages
4
Hi everyone,

I want to use an IR laser diode to communicate with my TSOP 38Khz photodiode reciever for large distance (1KM) using optics.

can someone recommend on a good and foucsed IR laser diode for my type of work?
 

duke37

Jan 9, 2011
5,364
Joined
Jan 9, 2011
Messages
5,364
RadCom, the journal of the RSGB has had some articles on long distance communication using leds. The latest uses a lens from Poundland to focus the beam.

Fresnel lenses as used in car rear windows have also been used. You must get a lens which has low absorption at the wavelength you are using.
 
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