Figure 27: Power transmitted and circulating in a two mirror cavity with input power 1 W. The
mirror transmissions are set such that and the reflectivities of both mirrors are set
as . The cavity is undercoupled for , impedance matched at
and overcoupled for . The transmission is maximised in the impedance-matched case and
falls similarly for over or undercoupled settings. However, the circulating power (and any resonance
performance of the cavity) is much larger in the overcoupled case.
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