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Infrared laser for communication

Discussion in 'LEDs and Optoelectronics' started by Pini Deri, May 18, 2014.

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  1. Pini Deri

    Pini Deri

    4
    0
    May 11, 2014
    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?
     
  2. duke37

    duke37

    5,267
    727
    Jan 9, 2011
    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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