Second-harmonic generation from a subwavelength-thick Langmuir-Blodgett film forms an effective dipole oscillator with an essentially one-dimensional radiation pattern. a reflecting boundary is used to suppress (similar to 80%) and enhance (similar to 70%) the total rate of radiation from the system compared to its free-space value. The field amplitude between the dipole and the boundary is directly sampled and found to be constant in value. independent of the total rate of radiation. Hence, a nonvanishing field exists inside the System even during suppression of radiation, i.e., when the system loses no energy. [S0031-9007(97)05227-7].