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Standard cavity cooling of atoms or dielectric particles is based on theaction of dispersive optical forces in high-finesse cavities. We investigatehere a complementary regime characterized by large cavity losses, resemblingthe standard Doppler cooling technique. For a single two-level emitter amodification of the cooling rate is obtained from the Purcell enhancement ofspontaneous emission in the large cooperativity limit. This mechanism is aimedat cooling of quantum emitters without closed transitions, which is the casefor molecular systems, where the Purcell effect can mitigate the loss ofpopulation from the cooling cycle. We extend our analytical formulation to themany particle case governed by weak individual coupling but exhibitingcollective strong Purcell enhancement to a cavity mode.

Purcell modified Doppler cooling of quantum emitters inside optical cavities