Hello.
can u tell me witch is best audio transmitter and receiver circuit using Lm386 or by other IC.
i want to transmit it by laser or other light source
An LM386 IC is cheap so its has low output power and is noisy (hiss). It can drive a laser diode up to its maximum output power.
The low power and noise might cause a problem in a receiver.
If you simply modulate the light with AM then there will be interference from many things so high fidelity systems modulate the light with FM.