Abstract

Atomic resonance filters (ARF) have the unique property of simultaneously being wide angle and extremely narrowband. ARFs depend on atomic excitation of a contained gas at one wavelength and the fluorescence at a longer wavelength. By sandwiching the gas between two edge filters (the input filter transmitting at and below the excitation wavelength and the output filter transmitting at and above the fluorescence wavelength) the combination has throughput only from the gas resonance.

© 1990 Optical Society of America