Abstract
Narrow-bandwidth optical sources are readily available. However, tunable narrow-bandwidth, wide field-of-view optical filters are not available. The laser-pumped atomic vapor optical filters presented here are in principle tunable narrow-bandwidth, wide field-of-view optical filters. These filters can simultaneously provide high resolution (0.001 nm), wide field-of-view (±90°), high quantum efficiency, and electrically tunable optical filtering. These devices are ideally suited for extracting weak narrow-bandwidth signals buried in strong nonresonant optical background radiation. Potential applications of these fitters include laser communications, laser radar, detection of Raman radiation, and atomic spectroscopy.
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