Propagation loss in photonic crystal waveguides embedding InAs/GaAs quantum dots determined by direct spectral imaging

Lorenzo Scarpelli; Ben Lang; Francesco Masia; Daryll Beggs; Egor Muljarov; Andrew B. Young; Ruth Oulton; Sven Höfling; Christian Schneider; Wolfgang Langbein

doi:10.1117/12.2510478

Propagation loss in photonic crystal waveguides embedding InAs/GaAs quantum dots determined by direct spectral imaging

Lorenzo Scarpelli, Ben Lang, Francesco Masia, Daryll Beggs, Egor Muljarov, Andrew B. Young, Ruth Oulton, Sven Höfling, Christian Schneider, Wolfgang Langbein^*

^*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceeding › Conference proceeding contribution › peer-review

Abstract

We determine the propagation loss of GaAs photonic crystal waveguides by spectral imaging of the spontaneous emission from the embedded InAs/GaAs quantum dots. The results are compared with the loss obtained by imaging the near field of the out-of-plane radiation of the waveguide mode propagating within the light cone. From the corresponding far field, we furthermore measure the mode wavevector, from which we determine the waveguide dispersion. Additionally, we show that spectral imaging allows to determine the relative efficiencies of the couplers. Using the same experiment, and detailed photonic simulations, we have determined the beta factor and the directionality of the emission of the QDs, finding beta factors up to 99% and high directionalities.

Original language	English
Title of host publication	Ultrafast Phenomena and Nanophotonics XXIII
Editors	Markus Betz, Abdulhakem Y. Elezzabi
Place of Publication	Bellingham, Washington
Publisher	SPIE
Pages	1091617-1-1091617-8
Number of pages	8
ISBN (Electronic)	781510624757
ISBN (Print)	9781510624740
DOIs	https://doi.org/10.1117/12.2510478
Publication status	Published - 27 Feb 2019
Externally published	Yes
Event	Ultrafast Phenomena and Nanophotonics XXIII 2019 - San Francisco, United States Duration: 3 Feb 2019 → 6 Feb 2019

Publication series

Name	Proceedings of SPIE
Publisher	SPIE
Volume	10916
ISSN (Print)	0277-786X
ISSN (Electronic)	1996-756X

Conference

Conference	Ultrafast Phenomena and Nanophotonics XXIII 2019
Country/Territory	United States
City	San Francisco
Period	3/02/19 → 6/02/19

Keywords

Photonic crystal waveguide
Propagation loss
Quantum dots
Spectral imaging

Access to Document

10.1117/12.2510478

Cite this

Scarpelli, L., Lang, B., Masia, F., Beggs, D., Muljarov, E., Young, A. B., Oulton, R., Höfling, S., Schneider, C., & Langbein, W. (2019). Propagation loss in photonic crystal waveguides embedding InAs/GaAs quantum dots determined by direct spectral imaging. In M. Betz, & A. Y. Elezzabi (Eds.), Ultrafast Phenomena and Nanophotonics XXIII (pp. 1091617-1-1091617-8). Article 1091617 (Proceedings of SPIE; Vol. 10916). SPIE. https://doi.org/10.1117/12.2510478

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title = "Propagation loss in photonic crystal waveguides embedding InAs/GaAs quantum dots determined by direct spectral imaging",

abstract = "We determine the propagation loss of GaAs photonic crystal waveguides by spectral imaging of the spontaneous emission from the embedded InAs/GaAs quantum dots. The results are compared with the loss obtained by imaging the near field of the out-of-plane radiation of the waveguide mode propagating within the light cone. From the corresponding far field, we furthermore measure the mode wavevector, from which we determine the waveguide dispersion. Additionally, we show that spectral imaging allows to determine the relative efficiencies of the couplers. Using the same experiment, and detailed photonic simulations, we have determined the beta factor and the directionality of the emission of the QDs, finding beta factors up to 99% and high directionalities.",

keywords = "Photonic crystal waveguide, Propagation loss, Quantum dots, Spectral imaging",

author = "Lorenzo Scarpelli and Ben Lang and Francesco Masia and Daryll Beggs and Egor Muljarov and Young, {Andrew B.} and Ruth Oulton and Sven H{\"o}fling and Christian Schneider and Wolfgang Langbein",

year = "2019",

month = feb,

day = "27",

doi = "10.1117/12.2510478",

language = "English",

isbn = "9781510624740",

series = "Proceedings of SPIE",

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pages = "1091617--1--1091617--8",

editor = "Markus Betz and Elezzabi, {Abdulhakem Y.}",

booktitle = "Ultrafast Phenomena and Nanophotonics XXIII",

address = "United States",

note = "Ultrafast Phenomena and Nanophotonics XXIII 2019 ; Conference date: 03-02-2019 Through 06-02-2019",

}

Scarpelli, L, Lang, B, Masia, F, Beggs, D, Muljarov, E, Young, AB, Oulton, R, Höfling, S, Schneider, C & Langbein, W 2019, Propagation loss in photonic crystal waveguides embedding InAs/GaAs quantum dots determined by direct spectral imaging. in M Betz & AY Elezzabi (eds), Ultrafast Phenomena and Nanophotonics XXIII., 1091617, Proceedings of SPIE, vol. 10916, SPIE, Bellingham, Washington, pp. 1091617-1-1091617-8, Ultrafast Phenomena and Nanophotonics XXIII 2019, San Francisco, United States, 3/02/19. https://doi.org/10.1117/12.2510478

Propagation loss in photonic crystal waveguides embedding InAs/GaAs quantum dots determined by direct spectral imaging. / Scarpelli, Lorenzo; Lang, Ben; Masia, Francesco et al.
Ultrafast Phenomena and Nanophotonics XXIII. ed. / Markus Betz; Abdulhakem Y. Elezzabi. Bellingham, Washington: SPIE, 2019. p. 1091617-1-1091617-8 1091617 (Proceedings of SPIE; Vol. 10916).

Research output: Chapter in Book/Report/Conference proceeding › Conference proceeding contribution › peer-review

TY - GEN

T1 - Propagation loss in photonic crystal waveguides embedding InAs/GaAs quantum dots determined by direct spectral imaging

AU - Scarpelli, Lorenzo

AU - Lang, Ben

AU - Masia, Francesco

AU - Beggs, Daryll

AU - Muljarov, Egor

AU - Young, Andrew B.

AU - Oulton, Ruth

AU - Höfling, Sven

AU - Schneider, Christian

AU - Langbein, Wolfgang

PY - 2019/2/27

Y1 - 2019/2/27

N2 - We determine the propagation loss of GaAs photonic crystal waveguides by spectral imaging of the spontaneous emission from the embedded InAs/GaAs quantum dots. The results are compared with the loss obtained by imaging the near field of the out-of-plane radiation of the waveguide mode propagating within the light cone. From the corresponding far field, we furthermore measure the mode wavevector, from which we determine the waveguide dispersion. Additionally, we show that spectral imaging allows to determine the relative efficiencies of the couplers. Using the same experiment, and detailed photonic simulations, we have determined the beta factor and the directionality of the emission of the QDs, finding beta factors up to 99% and high directionalities.

AB - We determine the propagation loss of GaAs photonic crystal waveguides by spectral imaging of the spontaneous emission from the embedded InAs/GaAs quantum dots. The results are compared with the loss obtained by imaging the near field of the out-of-plane radiation of the waveguide mode propagating within the light cone. From the corresponding far field, we furthermore measure the mode wavevector, from which we determine the waveguide dispersion. Additionally, we show that spectral imaging allows to determine the relative efficiencies of the couplers. Using the same experiment, and detailed photonic simulations, we have determined the beta factor and the directionality of the emission of the QDs, finding beta factors up to 99% and high directionalities.

KW - Photonic crystal waveguide

KW - Propagation loss

KW - Quantum dots

KW - Spectral imaging

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M3 - Conference proceeding contribution

AN - SCOPUS:85066013873

SN - 9781510624740

T3 - Proceedings of SPIE

SP - 1091617-1-1091617-8

BT - Ultrafast Phenomena and Nanophotonics XXIII

A2 - Betz, Markus

A2 - Elezzabi, Abdulhakem Y.

PB - SPIE

CY - Bellingham, Washington

T2 - Ultrafast Phenomena and Nanophotonics XXIII 2019

Y2 - 3 February 2019 through 6 February 2019

ER -

Scarpelli L, Lang B, Masia F, Beggs D, Muljarov E, Young AB et al. Propagation loss in photonic crystal waveguides embedding InAs/GaAs quantum dots determined by direct spectral imaging. In Betz M, Elezzabi AY, editors, Ultrafast Phenomena and Nanophotonics XXIII. Bellingham, Washington: SPIE. 2019. p. 1091617-1-1091617-8. 1091617. (Proceedings of SPIE). doi: 10.1117/12.2510478

Propagation loss in photonic crystal waveguides embedding InAs/GaAs quantum dots determined by direct spectral imaging

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