Superradiance and high-gain mirrorless laser activity of O−2-centers in KCl

Florian, Reinhold; Schwan, L. O.; Schmid, Dirk

doi:10.1016/0038-1098(82)91028-6

Cited by 71 publications

(27 citation statements)

References 8 publications

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“…Until very recently, SF have been observed in atomic gases 13,14 and rarefied impurities in crystals. [15][16][17] Observations of SF emission from high-density systems such as semiconductor electronhole plasmas have heretofore proven difficult.…”

Section: Introductionmentioning

confidence: 99%

Cooperative recombination of electron-hole pairs in semiconductor quantum wells under quantizing magnetic fields

et al. 2010

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We present results of detailed investigations of light emission from semiconductor multiple quantum wells at low temperatures and high magnetic fields excited by intense femtosecond laser pulses. The intensity and linewidth as well as the directional and statistical properties of photoemission strongly depended on the magnetic field strength and pump laser fluence. We also investigated the effects of spot size, temperature, excitation geometry, and excitation pulse width on the emission properties. The results suggest that the initially incoherent photoexcited electron-hole pairs spontaneously form a macroscopic coherent state upon relaxation into the low-lying magnetoexcitonic states, followed by the emission of a superfluorescent burst of radiation. We have developed a theoretical model for superfluorescent emission from semiconductor quantum wells, which successfully explained the observed characteristics.

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Section: Introductionmentioning

confidence: 99%

Cooperative recombination of electron-hole pairs in semiconductor quantum wells under quantizing magnetic fields

et al. 2010

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“…9 The first solid-state experiments on SR were carried out in the early 1980s. O 2 -centers in KCl crystals 10,11 and impurity pyrene molecules in di-phenyl crystals were used in these experiments. 12 In 1999, SR was observed in a RE doped crystal, Pr 3+ :LaF 3 , for the first time.…”

Section: Theoretical Analysismentioning

confidence: 99%

Alternative technique for laser cooling with superradiance

Nemova¹,

Kashyap²

2011

Phys. Rev. A

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We present a new theoretical scheme for laser cooling of rare earth doped solids with optical super-radiance (SR), which is the coherent, sharply directed spontaneous emission of photons by a system of laser excited rare earth ions in the solid state host (glass or crystal). We consider an Yb 3+ doped ZBLAN sample pumped at the wavelength 1015 nm with a rectangular pulsed source with a power of ~433W and duration of 10ns. The intensity of the SR is proportional to the square of the number of excited ions. This unique feature of SR permits a dramatic increase in the rate of the cooling process in comparison with the traditional laser cooling of the rare earth doped solids with anti-Stokes spontaneous incoherent radiation (fluorescence). This scheme overcomes the limitation of using only low phonon energy hosts for laser cooling. PACS number (s): 78.20.N, 78.20.Bh, 78.55.Hx

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“…Collective energy emission processes by a system of quantum emitters such as optical superradiation have long been studied, both theoretically and experimentally [1][2][3][4]. The new possibilities of known effects can be related to the collective behavior of plasmon oscillators pumped by the near field of excited chromophores such as semiconductor quantum dots (QDs), dye molecules, etc.…”

Section: Introductionmentioning

confidence: 99%

Formation of plasmon pulses in the cooperative decay of excitons of quantum dots near a metal surface

Shesterikov

Gubin

Gladush

et al. 2017

J. Exp. Theor. Phys.

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The formation of pulses of surface electromagnetic waves in a metal/dielectric interface is considered in the process of cooperative decay of excitons of quantum dots distributed near a metal surface in a dielectric layer. It is shown that the efficiency of exciton energy transfer to excited plasmons can be increased by selecting the dielectric material with specified values of the complex permittivity. It is found that in the mean field approximation the semiclassical model of formation of plasmon pulses in the system under study is reduced to the pendulum equation with the additional term of nonlinear losses.

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Superradiance and high-gain mirrorless laser activity of O−2-centers in KCl

Cited by 71 publications

References 8 publications

Cooperative recombination of electron-hole pairs in semiconductor quantum wells under quantizing magnetic fields

Cooperative recombination of electron-hole pairs in semiconductor quantum wells under quantizing magnetic fields

Alternative technique for laser cooling with superradiance

Formation of plasmon pulses in the cooperative decay of excitons of quantum dots near a metal surface

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