We present experimental results that explore the degree to which metal-clad microcavities may alter the spontaneous emission rate of a fluorescent species embedded within the cavity. We examine the role of the reflectivity and loss of the mirrors in determining the modified decay rate by altering the thickness of one of the metal mirrors. We show that despite losses arising from the metallic mirrors, metal-clad microcavities may still significantly modify the spontaneous emission rate of the embedded emitter.
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Worthing et al. (1999) studied this question.
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