A system and method for controllably chirping electromagnetic radiation from aradiation source includes an optical cavity arrangement. The optical cavityarrangement enables electromagnetic radiation to be produced with asubstantially linear chirp rate and a configurable period. By selectivelyinjecting electromagnetic radiation into the optical cavity, theelectromagnetic radiation may be produced with a single resonant mode that isfrequency shifted at the substantially linear chirp rate. Producing theelectromagnetic radiation with a single resonant mode may increase thecoherence length of the electromagnetic radiation, which may be advantageouswhen the electromagnetic radiation is implemented in various applications. Forexample, the electromagnetic radiation produced by the optical cavityarrangement may enhance a range, speed, accuracy, and/or other aspects of alaser radar system.
