Dynamical Properties of Nanolasers Based on Few Discrete Emitters

Anders Mølbjerg Lund; Per Kær Nielsen; Michael Lorke; Bjarne Tromborg; Jesper Mørk

doi:10.1109/JQE.2013.2282464

Dynamical Properties of Nanolasers Based on Few Discrete Emitters

Anders Mølbjerg Lund, Per Kær Nielsen, Michael Lorke, Bjarne Tromborg, Jesper Mørk

Research output: Contribution to journal › Journal article › Research › peer-review

Abstract

We investigate the dynamical properties of nanolasers comprising a few two-level emitters coupled to an optical cavity. A set of rate equations is derived, and is shown to agree very well with a solution of the full master equation model. Using a linearized version of these rate equations, we can analytically express the response of the nanolaser to a modulation of the pumping rate. These results are compared with the modulation response obtained directly from the master equation using a novel method. We show that contrary to conventional semiconductor lasers, the nanolaser is typically over-damped and displays a dip in the modulation bandwidth as the two-level systems become inverted. Both these features can be traced back to the use of discrete emitters that are incoherently pumped.

Original language	English
Journal	I E E E Journal of Quantum Electronics
Volume	49
Issue number	11
Pages (from-to)	945-954
ISSN	0018-9197
DOIs	https://doi.org/10.1109/JQE.2013.2282464
Publication status	Published - 2013

Keywords

Laser theory
Quantum dot lasers
Atom lasers
Nanoscale devices

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title = "Dynamical Properties of Nanolasers Based on Few Discrete Emitters",

abstract = "We investigate the dynamical properties of nanolasers comprising a few two-level emitters coupled to an optical cavity. A set of rate equations is derived, and is shown to agree very well with a solution of the full master equation model. Using a linearized version of these rate equations, we can analytically express the response of the nanolaser to a modulation of the pumping rate. These results are compared with the modulation response obtained directly from the master equation using a novel method. We show that contrary to conventional semiconductor lasers, the nanolaser is typically over-damped and displays a dip in the modulation bandwidth as the two-level systems become inverted. Both these features can be traced back to the use of discrete emitters that are incoherently pumped.",

keywords = "Laser theory, Quantum dot lasers, Atom lasers, Nanoscale devices",

author = "Lund, {Anders M{\o}lbjerg} and Nielsen, {Per K{\ae}r} and Michael Lorke and Bjarne Tromborg and Jesper M{\o}rk",

year = "2013",

doi = "10.1109/JQE.2013.2282464",

language = "English",

volume = "49",

pages = "945--954",

journal = "I E E E Journal of Quantum Electronics",

issn = "0018-9197",

publisher = "Institute of Electrical and Electronics Engineers",

number = "11",

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TY - JOUR

T1 - Dynamical Properties of Nanolasers Based on Few Discrete Emitters

AU - Lund, Anders Mølbjerg

AU - Nielsen, Per Kær

AU - Lorke, Michael

AU - Tromborg, Bjarne

AU - Mørk, Jesper

PY - 2013

Y1 - 2013

N2 - We investigate the dynamical properties of nanolasers comprising a few two-level emitters coupled to an optical cavity. A set of rate equations is derived, and is shown to agree very well with a solution of the full master equation model. Using a linearized version of these rate equations, we can analytically express the response of the nanolaser to a modulation of the pumping rate. These results are compared with the modulation response obtained directly from the master equation using a novel method. We show that contrary to conventional semiconductor lasers, the nanolaser is typically over-damped and displays a dip in the modulation bandwidth as the two-level systems become inverted. Both these features can be traced back to the use of discrete emitters that are incoherently pumped.

AB - We investigate the dynamical properties of nanolasers comprising a few two-level emitters coupled to an optical cavity. A set of rate equations is derived, and is shown to agree very well with a solution of the full master equation model. Using a linearized version of these rate equations, we can analytically express the response of the nanolaser to a modulation of the pumping rate. These results are compared with the modulation response obtained directly from the master equation using a novel method. We show that contrary to conventional semiconductor lasers, the nanolaser is typically over-damped and displays a dip in the modulation bandwidth as the two-level systems become inverted. Both these features can be traced back to the use of discrete emitters that are incoherently pumped.

KW - Laser theory

KW - Quantum dot lasers

KW - Atom lasers

KW - Nanoscale devices

U2 - 10.1109/JQE.2013.2282464

DO - 10.1109/JQE.2013.2282464

M3 - Journal article

VL - 49

SP - 945

EP - 954

JO - I E E E Journal of Quantum Electronics

JF - I E E E Journal of Quantum Electronics

SN - 0018-9197

IS - 11

ER -