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It certainly can transmit and can achieve great range but normal "pointer" laser LEDs are not really suitable for analog signals and not too good at high speed digital either. All you have to do is pulse their current on and off in the same way as an IR transmitter. I would forget LDR receivers unless you are using very low speed data, thir response time is very slow, a phototransistor or photodiode would be a better choice.
If you do an internet search on laser links it will give you more information.