Ultrafast gain and index dynamics in a semiconductor optical amplifier: theory and experiment

H.J.S. Dorren; X. Yang; D. Lenstra; H. Waardt, de; G.D. Khoe; T. Simoyama; H. Ishikawa; H. Kawashima; T. Hasama

doi:10.1117/12.482319

Ultrafast gain and index dynamics in a semiconductor optical amplifier: theory and experiment

H.J.S. Dorren, X. Yang, D. Lenstra, H. Waardt, de, G.D. Khoe, T. Simoyama, H. Ishikawa, H. Kawashima, T. Hasama

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

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Abstract

We explain how a semiconductor optical amplifier in a Sagnac-interferometric arrangement can be used for switching of 200 fs optical pulses. The switching principles are based on gain and index saturation dynamics on a sub-picosecond timescale. We present a model that accounts for bi-directional propagation of ultrashort optical pulses through the amplifier as well as free-carrier absorption and two-photon absorption. We have also carried out pump and probe experiments to measure the ultrafast refractive index dynamics of a multi-quantum well InGaAsP-InGaAs semiconductor optical amplifier that is operated in the gain regime. The pump and probe pulses are cross-linearly polarized. We observe a phase shift of 200 degrees if the amplifier is pumped with 120 mA of current, but find that the phase shift vanishes if the injection current is increased to 160 mA. Our results indicate a contribution of two-photon absorption to the nonlinear phase shift that opposes the phase shift introduced by the gain. Finally, we observe that the phase shift comes up and disappears within a picosecond.

Original language	English
Title of host publication	Physics and Simulation of Optoelectronic Devices XI, San Jose, California, USA
Editors	Marek Osinski, Hiroshi Amano, Peter Blood
Place of Publication	Bellingham
Publisher	SPIE
Pages	521-528
DOIs	https://doi.org/10.1117/12.482319
Publication status	Published - 2003
Event	Physics and Simulation of Optoelectronic Devices XI, January 27-31, 2003, San Jose, CA, USA - San Jose, CA, United States Duration: 27 Jan 2003 → 31 Jan 2003

Publication series

Name	Proceedings of SPIE
Volume	4986

Conference

Conference	Physics and Simulation of Optoelectronic Devices XI, January 27-31, 2003, San Jose, CA, USA
Country	United States
City	San Jose, CA
Period	27/01/03 → 31/01/03

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Dorren, H. J. S., Yang, X., Lenstra, D., Waardt, de, H., Khoe, G. D., Simoyama, T., Ishikawa, H., Kawashima, H., & Hasama, T. (2003). Ultrafast gain and index dynamics in a semiconductor optical amplifier: theory and experiment. In M. Osinski, H. Amano, & P. Blood (Eds.), Physics and Simulation of Optoelectronic Devices XI, San Jose, California, USA (pp. 521-528). (Proceedings of SPIE; Vol. 4986). SPIE. https://doi.org/10.1117/12.482319

Dorren, H.J.S. ; Yang, X. ; Lenstra, D. ; Waardt, de, H. ; Khoe, G.D. ; Simoyama, T. ; Ishikawa, H. ; Kawashima, H. ; Hasama, T. / Ultrafast gain and index dynamics in a semiconductor optical amplifier: theory and experiment. Physics and Simulation of Optoelectronic Devices XI, San Jose, California, USA. editor / Marek Osinski ; Hiroshi Amano ; Peter Blood. Bellingham : SPIE, 2003. pp. 521-528 (Proceedings of SPIE).

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title = "Ultrafast gain and index dynamics in a semiconductor optical amplifier: theory and experiment",

abstract = "We explain how a semiconductor optical amplifier in a Sagnac-interferometric arrangement can be used for switching of 200 fs optical pulses. The switching principles are based on gain and index saturation dynamics on a sub-picosecond timescale. We present a model that accounts for bi-directional propagation of ultrashort optical pulses through the amplifier as well as free-carrier absorption and two-photon absorption. We have also carried out pump and probe experiments to measure the ultrafast refractive index dynamics of a multi-quantum well InGaAsP-InGaAs semiconductor optical amplifier that is operated in the gain regime. The pump and probe pulses are cross-linearly polarized. We observe a phase shift of 200 degrees if the amplifier is pumped with 120 mA of current, but find that the phase shift vanishes if the injection current is increased to 160 mA. Our results indicate a contribution of two-photon absorption to the nonlinear phase shift that opposes the phase shift introduced by the gain. Finally, we observe that the phase shift comes up and disappears within a picosecond.",

author = "H.J.S. Dorren and X. Yang and D. Lenstra and {Waardt, de}, H. and G.D. Khoe and T. Simoyama and H. Ishikawa and H. Kawashima and T. Hasama",

year = "2003",

doi = "10.1117/12.482319",

language = "English",

series = "Proceedings of SPIE",

publisher = "SPIE",

pages = "521--528",

editor = "Marek Osinski and Hiroshi Amano and Peter Blood",

booktitle = "Physics and Simulation of Optoelectronic Devices XI, San Jose, California, USA",

address = "United States",

note = "Physics and Simulation of Optoelectronic Devices XI, January 27-31, 2003, San Jose, CA, USA ; Conference date: 27-01-2003 Through 31-01-2003",

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Dorren, HJS, Yang, X, Lenstra, D , Waardt, de, H , Khoe, GD, Simoyama, T, Ishikawa, H, Kawashima, H & Hasama, T 2003, Ultrafast gain and index dynamics in a semiconductor optical amplifier: theory and experiment. in M Osinski, H Amano & P Blood (eds), Physics and Simulation of Optoelectronic Devices XI, San Jose, California, USA. Proceedings of SPIE, vol. 4986, SPIE, Bellingham, pp. 521-528, Physics and Simulation of Optoelectronic Devices XI, January 27-31, 2003, San Jose, CA, USA, San Jose, CA, United States, 27/01/03. https://doi.org/10.1117/12.482319

Ultrafast gain and index dynamics in a semiconductor optical amplifier: theory and experiment. / Dorren, H.J.S.; Yang, X.; Lenstra, D.; Waardt, de, H.; Khoe, G.D.; Simoyama, T.; Ishikawa, H.; Kawashima, H.; Hasama, T.

Physics and Simulation of Optoelectronic Devices XI, San Jose, California, USA. ed. / Marek Osinski; Hiroshi Amano; Peter Blood. Bellingham : SPIE, 2003. p. 521-528 (Proceedings of SPIE; Vol. 4986).

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

TY - GEN

T1 - Ultrafast gain and index dynamics in a semiconductor optical amplifier: theory and experiment

AU - Dorren, H.J.S.

AU - Yang, X.

AU - Lenstra, D.

AU - Waardt, de, H.

AU - Khoe, G.D.

AU - Simoyama, T.

AU - Ishikawa, H.

AU - Kawashima, H.

AU - Hasama, T.

PY - 2003

Y1 - 2003

N2 - We explain how a semiconductor optical amplifier in a Sagnac-interferometric arrangement can be used for switching of 200 fs optical pulses. The switching principles are based on gain and index saturation dynamics on a sub-picosecond timescale. We present a model that accounts for bi-directional propagation of ultrashort optical pulses through the amplifier as well as free-carrier absorption and two-photon absorption. We have also carried out pump and probe experiments to measure the ultrafast refractive index dynamics of a multi-quantum well InGaAsP-InGaAs semiconductor optical amplifier that is operated in the gain regime. The pump and probe pulses are cross-linearly polarized. We observe a phase shift of 200 degrees if the amplifier is pumped with 120 mA of current, but find that the phase shift vanishes if the injection current is increased to 160 mA. Our results indicate a contribution of two-photon absorption to the nonlinear phase shift that opposes the phase shift introduced by the gain. Finally, we observe that the phase shift comes up and disappears within a picosecond.

AB - We explain how a semiconductor optical amplifier in a Sagnac-interferometric arrangement can be used for switching of 200 fs optical pulses. The switching principles are based on gain and index saturation dynamics on a sub-picosecond timescale. We present a model that accounts for bi-directional propagation of ultrashort optical pulses through the amplifier as well as free-carrier absorption and two-photon absorption. We have also carried out pump and probe experiments to measure the ultrafast refractive index dynamics of a multi-quantum well InGaAsP-InGaAs semiconductor optical amplifier that is operated in the gain regime. The pump and probe pulses are cross-linearly polarized. We observe a phase shift of 200 degrees if the amplifier is pumped with 120 mA of current, but find that the phase shift vanishes if the injection current is increased to 160 mA. Our results indicate a contribution of two-photon absorption to the nonlinear phase shift that opposes the phase shift introduced by the gain. Finally, we observe that the phase shift comes up and disappears within a picosecond.

U2 - 10.1117/12.482319

DO - 10.1117/12.482319

M3 - Conference contribution

T3 - Proceedings of SPIE

SP - 521

EP - 528

BT - Physics and Simulation of Optoelectronic Devices XI, San Jose, California, USA

A2 - Osinski, Marek

A2 - Amano, Hiroshi

A2 - Blood, Peter

PB - SPIE

CY - Bellingham

T2 - Physics and Simulation of Optoelectronic Devices XI, January 27-31, 2003, San Jose, CA, USA

Y2 - 27 January 2003 through 31 January 2003

ER -

Dorren HJS, Yang X, Lenstra D , Waardt, de H , Khoe GD, Simoyama T et al. Ultrafast gain and index dynamics in a semiconductor optical amplifier: theory and experiment. In Osinski M, Amano H, Blood P, editors, Physics and Simulation of Optoelectronic Devices XI, San Jose, California, USA. Bellingham: SPIE. 2003. p. 521-528. (Proceedings of SPIE). https://doi.org/10.1117/12.482319