Two-photon-absorption-assisted Tera Hertz optical gain modulation in quantum-dot optical amplifiers

H. Ju, A.V. Uskov, Z. Li, J. Molina Vázquez, R. Nötzel, D. Lenstra, G.D. Khoe, H.J.S. Dorren

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Uittreksel

Ultrafast carrier dynamics is examined in a quantum-dot (QD) semiconductor optical amplifier with a rate equation model which includes two-photon absorption (TPA) and gain bleaching during the propagation of 120 fs optical pulses at the wavelength near telecommunication wavebands. The TPA-generated carriers in the bulk region of the waveguide relax to the QDs via the wetting layer, which occurs synchronously in time and space with QD carrier depletion. This leads to efficient enhancement of the rate of carrier capture into the QDs, reducing the pattern effects for ultra high-speed optical signal processing.
Originele taal-2Engels
Pagina's (van-tot)543-546
Aantal pagina's4
TijdschriftPhysica E: Low-Dimensional Systems & Nanostructures
Volume32
Nummer van het tijdschrift1-2
DOI's
StatusGepubliceerd - 2006

Vingerafdruk

Optical gain
Light amplifiers
light amplifiers
Semiconductor quantum dots
Photons
quantum dots
Modulation
Optical signal processing
modulation
Semiconductor optical amplifiers
photons
Bleaching
Telecommunication
Wetting
Laser pulses
Waveguides
Wavelength
bleaching
wetting
optical communication

Citeer dit

Ju, H. ; Uskov, A.V. ; Li, Z. ; Molina Vázquez, J. ; Nötzel, R. ; Lenstra, D. ; Khoe, G.D. ; Dorren, H.J.S. / Two-photon-absorption-assisted Tera Hertz optical gain modulation in quantum-dot optical amplifiers. In: Physica E: Low-Dimensional Systems & Nanostructures. 2006 ; Vol. 32, Nr. 1-2. blz. 543-546.
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abstract = "Ultrafast carrier dynamics is examined in a quantum-dot (QD) semiconductor optical amplifier with a rate equation model which includes two-photon absorption (TPA) and gain bleaching during the propagation of 120 fs optical pulses at the wavelength near telecommunication wavebands. The TPA-generated carriers in the bulk region of the waveguide relax to the QDs via the wetting layer, which occurs synchronously in time and space with QD carrier depletion. This leads to efficient enhancement of the rate of carrier capture into the QDs, reducing the pattern effects for ultra high-speed optical signal processing.",
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Two-photon-absorption-assisted Tera Hertz optical gain modulation in quantum-dot optical amplifiers. / Ju, H.; Uskov, A.V.; Li, Z.; Molina Vázquez, J.; Nötzel, R.; Lenstra, D.; Khoe, G.D.; Dorren, H.J.S.

In: Physica E: Low-Dimensional Systems & Nanostructures, Vol. 32, Nr. 1-2, 2006, blz. 543-546.

Onderzoeksoutput: Bijdrage aan tijdschriftTijdschriftartikelAcademicpeer review

TY - JOUR

T1 - Two-photon-absorption-assisted Tera Hertz optical gain modulation in quantum-dot optical amplifiers

AU - Ju, H.

AU - Uskov, A.V.

AU - Li, Z.

AU - Molina Vázquez, J.

AU - Nötzel, R.

AU - Lenstra, D.

AU - Khoe, G.D.

AU - Dorren, H.J.S.

PY - 2006

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AB - Ultrafast carrier dynamics is examined in a quantum-dot (QD) semiconductor optical amplifier with a rate equation model which includes two-photon absorption (TPA) and gain bleaching during the propagation of 120 fs optical pulses at the wavelength near telecommunication wavebands. The TPA-generated carriers in the bulk region of the waveguide relax to the QDs via the wetting layer, which occurs synchronously in time and space with QD carrier depletion. This leads to efficient enhancement of the rate of carrier capture into the QDs, reducing the pattern effects for ultra high-speed optical signal processing.

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DO - 10.1016/j.physe.2005.12.119

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JO - Physica E: Low-Dimensional Systems & Nanostructures

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