Enhancing the 3-dB bandwidth via the gain-lever effect in quantum-dot lasers

Y. Li; N. A. Naderi; V. Kovanis; L. F. Lester

doi:10.1109/JPHOT.2010.2046481

Enhancing the 3-dB bandwidth via the gain-lever effect in quantum-dot lasers

Y. Li, N. A. Naderi, V. Kovanis, L. F. Lester

Department of Physics

Research output: Contribution to journal › Article › peer-review

17 Citations (Scopus)

Abstract

We investigate the small-signal modulation response of two-section, gain-lever, quantum-dot semiconductor lasers. A three-pole modulation function is derived from a 3-D set of rate equations, and a 70% 3-dB bandwidth enhancement is computed and experimentally realized in an undoped quantum-dot gain-lever laser under extreme asymmetric-bias conditions. Finally, it is demonstrated that the 3-dB bandwidth is three times the free-running relaxation oscillation frequency in these types of laser structures, as opposed to 1.55 times in the case of conventional single-section lasers.

Original language	English
Article number	5446332
Pages (from-to)	321-329
Number of pages	9
Journal	IEEE Photonics Journal
Volume	2
Issue number	3
DOIs	https://doi.org/10.1109/JPHOT.2010.2046481
Publication status	Published - 2010

Keywords

Gain lever
Modulation bandwidth
Quantum dot

ASJC Scopus subject areas

Atomic and Molecular Physics, and Optics
Electrical and Electronic Engineering

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title = "Enhancing the 3-dB bandwidth via the gain-lever effect in quantum-dot lasers",

abstract = "We investigate the small-signal modulation response of two-section, gain-lever, quantum-dot semiconductor lasers. A three-pole modulation function is derived from a 3-D set of rate equations, and a 70% 3-dB bandwidth enhancement is computed and experimentally realized in an undoped quantum-dot gain-lever laser under extreme asymmetric-bias conditions. Finally, it is demonstrated that the 3-dB bandwidth is three times the free-running relaxation oscillation frequency in these types of laser structures, as opposed to 1.55 times in the case of conventional single-section lasers.",

keywords = "Gain lever, Modulation bandwidth, Quantum dot",

author = "Y. Li and Naderi, {N. A.} and V. Kovanis and Lester, {L. F.}",

note = "Funding Information: Manuscript received February 11, 2010; revised March 14, 2010. First published Online March 19, 2010. Current version published May 25, 2010. The work at the University of New Mexico was supported by an Air Force Summer Faculty Fellowship and Grant FA8750-06-1-0085. The work of V. Kovanis was supported by the Air Force Office of Science Research under Contract LRIR 09RY04COR. Corresponding author: Y. Li (e-mail: yanli@chtm.unm.edu).",

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AU - Naderi, N. A.

AU - Kovanis, V.

AU - Lester, L. F.

N1 - Funding Information: Manuscript received February 11, 2010; revised March 14, 2010. First published Online March 19, 2010. Current version published May 25, 2010. The work at the University of New Mexico was supported by an Air Force Summer Faculty Fellowship and Grant FA8750-06-1-0085. The work of V. Kovanis was supported by the Air Force Office of Science Research under Contract LRIR 09RY04COR. Corresponding author: Y. Li (e-mail: yanli@chtm.unm.edu).

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AB - We investigate the small-signal modulation response of two-section, gain-lever, quantum-dot semiconductor lasers. A three-pole modulation function is derived from a 3-D set of rate equations, and a 70% 3-dB bandwidth enhancement is computed and experimentally realized in an undoped quantum-dot gain-lever laser under extreme asymmetric-bias conditions. Finally, it is demonstrated that the 3-dB bandwidth is three times the free-running relaxation oscillation frequency in these types of laser structures, as opposed to 1.55 times in the case of conventional single-section lasers.

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