An insect decoy is provided that includes a vapor-isolated vessel, a chemical compound disposed within the vapor-isolated vessel, and an excitation energy source. The chemical compound may have one or more absorption bands at a set of absorption wavelengths and have one or more emission bands at a set of emission wavelengths. The excitation energy source may be configured to produce electromagnetic radiation at the absorption wavelengths so as to fluoresce the chemical compound and release photons at the emission wavelengths. The vapor-isolated vessel may be configured with at least one infrared transmissive window that is substantially transparent to the released photons at the emission wavelengths of the chemical compound.