Intensity independent bistable polarization switch based on ordered GaInP

Kippenberg, T.; Krauß, J.; Spieler, J.; Kiesel, P.; Greger, E.; Moser, M.; Döhler, G. H.

doi:10.1109/68.752537

Cited by 6 publications

(2 citation statements)

References 11 publications

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“…By using this property, novel optodevices, such as a low threshold laser and polarization switch, have been proposed. [1][2][3] From the basic viewpoint, the band-gap reduction and optical anisotropy induced by the composition modulation of Ga and In are interesting subjects.…”

Section: Introductionmentioning

confidence: 99%

Excitons at a single localized center induced by a natural composition modulation in bulkGa0.5In0.5P

Sugisaki¹,

Ren²,

Nishi

et al. 2000

Phys. Rev. B

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Optical properties of Ga 0.5 In 0.5 P grown by gas-source molecular beam epitaxy are reported. A strong optical anisotropy due to the spontaneous lateral composition modulation of Ga and In was observed in macro-and micro-photoluminescence ͑PL͒ spectra. The micro-PL study revealed that the PL band is composed of sharp lines that arise from the radiative decay of excitons trapped at local potential minima caused by the composition modulation. Anisotropy in PL rise and decay times was also observed. The detection energy dependence of the PL decay time is well explained by considering the relaxation process of excitons from shallow traps to deep traps.

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Section: Introductionmentioning

confidence: 99%

Excitons at a single localized center induced by a natural composition modulation in bulkGa0.5In0.5P

Sugisaki¹,

Ren²,

Nishi

et al. 2000

Phys. Rev. B

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“…For example, demonstrations of exclusive disjunction ͑exclusive-OR, XOR͒ optical gates and a polarization converter have been reported. [22][23][24] Kippenberg et al have proposed an optical switch using a bulk ordered GaInP, 25 and this idea was followed by highly polarization-and wavelength-sensitive optoelectronic switches designed by Spieler et al 26 In this view, it is interesting to study materials showing clear and strong optical anisotropy. Especially, ultrafast phenomena of such materials are very important because it provides information about electronic states through which the confined excitons relax.…”

Section: Introductionmentioning

confidence: 99%

Anisotropic optical response of InP self-assembled quantum dots studied by pump-probe spectroscopy

et al. 2007

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Transient anisotropic reflectivity change spectra of InP quantum dots have been observed by means of two-color pump-probe spectroscopy. The results show a fast decay component with a lifetime of 100-200 ps which depends on the probe energy, followed by the slow decay component of ϳ1 ns. The reflectivity change spectra have a dispersive shape having a maximum on the higher energy side of the photoluminescence ͑PL͒ band by 80 meV, and a dip located at the maximum of the PL band. Interestingly, the reflectivity change signals observed for the ͓110͔ and ͓110͔ polarizations have the opposite sign when the probe energy is set between the first and second exciton states. The temporal change of spectra is simulated by means of a Monte Carlo method, and the model is found to well reproduce the experimental result. Further, the model enables us to evaluate the microscopic exciton parameters of single quantum dots by macroscopic observations. The oscillator strengths along the ͓110͔ and ͓110͔ directions at the PL peak energy are evaluated to be f x = 0.37 and f y = 0.71, respectively. The oscillator strength is about five times smaller than simple theoretical estimates. This suggests a small overlap of the envelope functions which is consistent with the existence of a permanent dipole moment observed in these QDs.

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Polarization Effects in the (Electro)absorption of Ordered GaInP and their Device Applications

Kiesel

Kippenberg

Döhler

2002

Spontaneous Ordering in Semiconductor Alloys

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Intensity independent bistable polarization switch based on ordered GaInP

Cited by 6 publications

References 11 publications

Excitons at a single localized center induced by a natural composition modulation in bulkGa0.5In0.5P

Excitons at a single localized center induced by a natural composition modulation in bulkGa0.5In0.5P

Anisotropic optical response of InP self-assembled quantum dots studied by pump-probe spectroscopy

Polarization Effects in the (Electro)absorption of Ordered GaInP and their Device Applications

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