Polarization-dependent carrier dynamics in a passive InAs/InP quantum dot waveguide

H. Ju; J. Molina Vázquez; Z. Li; R. Nötzel; T. Vries, de; D. Lenstra; Q. Gong; P.J. Veldhoven, van; J.H. Wolter; G.D. Khoe; H.J.S. Dorren

doi:10.1016/j.optcom.2005.09.058

Polarization-dependent carrier dynamics in a passive InAs/InP quantum dot waveguide

H. Ju
, J. Molina Vázquez
, Z. Li
, R. Nötzel
, T. Vries, de
, D. Lenstra
, Q. Gong
, P.J. Veldhoven, van
, J.H. Wolter
, G.D. Khoe
, H.J.S. Dorren

Onderzoeksoutput: Bijdrage aan tijdschrift › Tijdschriftartikel › Academic › peer review

2 Citaten (Scopus)

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The authors investigate carrier dynamics in a passive InAs/InP quantum dot (QD) waveguide using 255 fs optical pulses at a central wavelength of 1568 nm. We observe strong anisotropy of absorption saturation for different polarizations. Pump–probe measurements indicate the presence of carrier relaxation dynamics on a timescale in the order of tens of picoseconds due to cascaded relaxation of carriers generated by two-photon absorption (TPA) from the bulk region to the QDs via the wetting layer. These relaxation timescales are much longer than in QD amplifiers. Our observations are supported by a rate-equation model which includes TPA, showing good agreement with the pump–probe measurements.

Originele taal-2	Engels
Pagina's (van-tot)	861-867
Aantal pagina's	7
Tijdschrift	Optics Communications
Volume	259
Nummer van het tijdschrift	2
DOI's	https://doi.org/10.1016/j.optcom.2005.09.058
Status	Gepubliceerd - 2006

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title = "Polarization-dependent carrier dynamics in a passive InAs/InP quantum dot waveguide",

abstract = "The authors investigate carrier dynamics in a passive InAs/InP quantum dot (QD) waveguide using 255 fs optical pulses at a central wavelength of 1568 nm. We observe strong anisotropy of absorption saturation for different polarizations. Pump–probe measurements indicate the presence of carrier relaxation dynamics on a timescale in the order of tens of picoseconds due to cascaded relaxation of carriers generated by two-photon absorption (TPA) from the bulk region to the QDs via the wetting layer. These relaxation timescales are much longer than in QD amplifiers. Our observations are supported by a rate-equation model which includes TPA, showing good agreement with the pump–probe measurements.",

author = "H. Ju and \{Molina V{\'a}zquez\}, J. and Z. Li and R. N{\"o}tzel and \{Vries, de\}, T. and D. Lenstra and Q. Gong and \{Veldhoven, van\}, P.J. and J.H. Wolter and G.D. Khoe and H.J.S. Dorren",

year = "2006",

doi = "10.1016/j.optcom.2005.09.058",

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T1 - Polarization-dependent carrier dynamics in a passive InAs/InP quantum dot waveguide

AU - Ju, H.

AU - Molina Vázquez, J.

AU - Li, Z.

AU - Nötzel, R.

AU - Vries, de, T.

AU - Lenstra, D.

AU - Gong, Q.

AU - Veldhoven, van, P.J.

AU - Wolter, J.H.

AU - Khoe, G.D.

AU - Dorren, H.J.S.

PY - 2006

Y1 - 2006

N2 - The authors investigate carrier dynamics in a passive InAs/InP quantum dot (QD) waveguide using 255 fs optical pulses at a central wavelength of 1568 nm. We observe strong anisotropy of absorption saturation for different polarizations. Pump–probe measurements indicate the presence of carrier relaxation dynamics on a timescale in the order of tens of picoseconds due to cascaded relaxation of carriers generated by two-photon absorption (TPA) from the bulk region to the QDs via the wetting layer. These relaxation timescales are much longer than in QD amplifiers. Our observations are supported by a rate-equation model which includes TPA, showing good agreement with the pump–probe measurements.

AB - The authors investigate carrier dynamics in a passive InAs/InP quantum dot (QD) waveguide using 255 fs optical pulses at a central wavelength of 1568 nm. We observe strong anisotropy of absorption saturation for different polarizations. Pump–probe measurements indicate the presence of carrier relaxation dynamics on a timescale in the order of tens of picoseconds due to cascaded relaxation of carriers generated by two-photon absorption (TPA) from the bulk region to the QDs via the wetting layer. These relaxation timescales are much longer than in QD amplifiers. Our observations are supported by a rate-equation model which includes TPA, showing good agreement with the pump–probe measurements.

U2 - 10.1016/j.optcom.2005.09.058

DO - 10.1016/j.optcom.2005.09.058

M3 - Article

SN - 0030-4018

VL - 259

SP - 861

EP - 867

JO - Optics Communications

JF - Optics Communications

IS - 2

ER -

Polarization-dependent carrier dynamics in a passive InAs/InP quantum dot waveguide

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