Spontaneous emission control of quantum dots embedded in photonic crystals: Effects of external fields and dimension

• QD radiation embedded in a photonic crystal is studied.
• Radiation fields depend on the photonic crystal band-gap and dot structure.
• It is possible to control the radiation spectrum by external factors.

In this paper simultaneous effects of external electric and magnetic fields and quantum confinement on the radiation properties of spherical quantum dot embedded in a photonic crystal are investigated. Under the influence of photonic band-gap, effects of external static fields and dot dimension on the amplitude and spectrum of different radiation fields emitted by the quantum dot are studied. Our results show the considerable effects of external fields and quantum confinement on the spontaneous emission of the system.