QED devices emitting EM radiation are disclosed comprising structures in microscopic cavities. Steady EM radiation is produced from structures essentially permanently separated from the cavity walls, while transient EM radiation occurs by providing means to cause the temporary separation of the structures from the cavity walls. At ambient temperature, the EM radiation from atoms in structures not separated from the cavity walls is emitted at IR frequencies. However, the IR radiation is suppressed from atoms in structures separated from the cavity walls because the cavities have higher EM resonant frequencies. To conserve EM energy, the suppressed IR radiation from the structures is spontaneously emitted and combines at the QED cavity surfaces to collectively produce VUV light, the process called cavity QED induced VUV light. QED devices are disclosed utilizing cavity QED induced VUV light to excite the atoms and molecules on the cavity surfaces to produce VIS light, electrons, and ions.
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