Two-dimensional analysis of self-sustained pulsation for narrow-stripe AlGaAs lasers

Masaaki Yuri; James S. Harris; Toru Takayama; Osamu Imafuji; Hiroki Naito; Masahiro Kume; Kunio Itoh; Takaaki Baba

doi:10.1109/2944.401231

Two-dimensional analysis of self-sustained pulsation for narrow-stripe AlGaAs lasers

Masaaki Yuri^*, James S. Harris, Toru Takayama, Osamu Imafuji, Hiroki Naito, Masahiro Kume, Kunio Itoh, Takaaki Baba

^*Corresponding author for this work

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

9 Citations (Scopus)

Abstract

Self-sustained pulsation in narrow-stripe geometry AlGaAs laser diodes is investigated numerically and experimentally. By taking account of the time-dependent two-dimensional optical field, carrier spreading in the cladding layers, and multilongitudinal modes, we succeeded in clarifying the mechanism for the pulsation. Fluctuation of the optical field plays an important role in forming saturable absorption. The numerical analysis clearly shows that our newly proposed real refractive index-guided structure is very suitable for a pulsation laser in which the optical field distribution and current spreading can be independently controlled. Furthermore, we show that the new structure gives much lower threshold current than that of a conventional loss-guided structure. These predicted advantages of the real refractive index-guided structure are verified experimentally with good agreement.

Original language	English
Pages (from-to)	473-479
Number of pages	7
Journal	IEEE Journal on Selected Topics in Quantum Electronics
Volume	1
Issue number	2
DOIs	https://doi.org/10.1109/2944.401231
Publication status	Published - 1995 Jun
Externally published	Yes

ASJC Scopus subject areas

Electrical and Electronic Engineering
Atomic and Molecular Physics, and Optics

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10.1109/2944.401231

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title = "Two-dimensional analysis of self-sustained pulsation for narrow-stripe AlGaAs lasers",

abstract = "Self-sustained pulsation in narrow-stripe geometry AlGaAs laser diodes is investigated numerically and experimentally. By taking account of the time-dependent two-dimensional optical field, carrier spreading in the cladding layers, and multilongitudinal modes, we succeeded in clarifying the mechanism for the pulsation. Fluctuation of the optical field plays an important role in forming saturable absorption. The numerical analysis clearly shows that our newly proposed real refractive index-guided structure is very suitable for a pulsation laser in which the optical field distribution and current spreading can be independently controlled. Furthermore, we show that the new structure gives much lower threshold current than that of a conventional loss-guided structure. These predicted advantages of the real refractive index-guided structure are verified experimentally with good agreement.",

author = "Masaaki Yuri and Harris, {James S.} and Toru Takayama and Osamu Imafuji and Hiroki Naito and Masahiro Kume and Kunio Itoh and Takaaki Baba",

year = "1995",

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doi = "10.1109/2944.401231",

language = "English",

volume = "1",

pages = "473--479",

journal = "IEEE Journal on Selected Topics in Quantum Electronics",

issn = "1077-260X",

publisher = "Institute of Electrical and Electronics Engineers Inc.",

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T1 - Two-dimensional analysis of self-sustained pulsation for narrow-stripe AlGaAs lasers

AU - Yuri, Masaaki

AU - Harris, James S.

AU - Takayama, Toru

AU - Imafuji, Osamu

AU - Naito, Hiroki

AU - Kume, Masahiro

AU - Itoh, Kunio

AU - Baba, Takaaki

PY - 1995/6

Y1 - 1995/6

N2 - Self-sustained pulsation in narrow-stripe geometry AlGaAs laser diodes is investigated numerically and experimentally. By taking account of the time-dependent two-dimensional optical field, carrier spreading in the cladding layers, and multilongitudinal modes, we succeeded in clarifying the mechanism for the pulsation. Fluctuation of the optical field plays an important role in forming saturable absorption. The numerical analysis clearly shows that our newly proposed real refractive index-guided structure is very suitable for a pulsation laser in which the optical field distribution and current spreading can be independently controlled. Furthermore, we show that the new structure gives much lower threshold current than that of a conventional loss-guided structure. These predicted advantages of the real refractive index-guided structure are verified experimentally with good agreement.

AB - Self-sustained pulsation in narrow-stripe geometry AlGaAs laser diodes is investigated numerically and experimentally. By taking account of the time-dependent two-dimensional optical field, carrier spreading in the cladding layers, and multilongitudinal modes, we succeeded in clarifying the mechanism for the pulsation. Fluctuation of the optical field plays an important role in forming saturable absorption. The numerical analysis clearly shows that our newly proposed real refractive index-guided structure is very suitable for a pulsation laser in which the optical field distribution and current spreading can be independently controlled. Furthermore, we show that the new structure gives much lower threshold current than that of a conventional loss-guided structure. These predicted advantages of the real refractive index-guided structure are verified experimentally with good agreement.

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Two-dimensional analysis of self-sustained pulsation for narrow-stripe AlGaAs lasers

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