Transverse magnetic emissions of GaAs unstrained quantum-well microcavity lasers

Takehiro Fukushima; Susumu Shinohara; Satoshi Sunada; Takahisa Harayama; Koichiro Sakaguchi; Yasunori Tokuda

doi:10.1109/ICTON.2015.7193549

Transverse magnetic emissions of GaAs unstrained quantum-well microcavity lasers

Takehiro Fukushima, Susumu Shinohara, Satoshi Sunada, Takahisa Harayama, Koichiro Sakaguchi, Yasunori Tokuda

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

Abstract

We investigated the polarization characteristics of emissions from two-dimensional microcavity laser diodes. For an unstrained single-quantum-well active layer structure, an argument based on the interband optical transition usually leads to the lasing of transverse electric (TE) rather than transverse magnetic (TM) modes. Indeed, we observed TE-polarized emissions for the excitation of modes quantized along a one-dimensional (Fabry-Perot) orbit. However, when selectively pumping modes quantized along a diamond-shaped ray orbit, we observed TM-polarized emissions. These unusual TM-polarized emissions can be explained by the fact that the incident angles of the diamond-shaped orbit are very close to the Brewster angle, making corresponding TE modes too leaky to be excited. This mode-dependent polarization leads us to propose a microcavity laser diode with the function of polarization switching.

Original language	English
Title of host publication	International Conference on Transparent Optical Networks
Publisher	IEEE Computer Society
Volume	2015-August
ISBN (Print)	9781467378802
DOIs	https://doi.org/10.1109/ICTON.2015.7193549
Publication status	Published - 2015 Aug 12
Event	17th International Conference on Transparent Optical Networks, ICTON 2015 - Budapest, Hungary Duration: 2015 Jul 5 → 2015 Jul 9

Other

Other	17th International Conference on Transparent Optical Networks, ICTON 2015
Country	Hungary
City	Budapest
Period	15/7/5 → 15/7/9

Keywords

Brewster angle
Laser diode
Microcavity
Polarization switching
Transverse electric emission
Transverse magnetic emission

ASJC Scopus subject areas

Computer Networks and Communications
Electrical and Electronic Engineering
Electronic, Optical and Magnetic Materials

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Transverse magnetic emissions of GaAs unstrained quantum-well microcavity lasers. / Fukushima, Takehiro; Shinohara, Susumu; Sunada, Satoshi; Harayama, Takahisa; Sakaguchi, Koichiro; Tokuda, Yasunori.

International Conference on Transparent Optical Networks. Vol. 2015-August IEEE Computer Society, 2015. 7193549.

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

Fukushima, T, Shinohara, S, Sunada, S, Harayama, T, Sakaguchi, K & Tokuda, Y 2015, Transverse magnetic emissions of GaAs unstrained quantum-well microcavity lasers. in International Conference on Transparent Optical Networks. vol. 2015-August, 7193549, IEEE Computer Society, 17th International Conference on Transparent Optical Networks, ICTON 2015, Budapest, Hungary, 15/7/5. https://doi.org/10.1109/ICTON.2015.7193549

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title = "Transverse magnetic emissions of GaAs unstrained quantum-well microcavity lasers",

abstract = "We investigated the polarization characteristics of emissions from two-dimensional microcavity laser diodes. For an unstrained single-quantum-well active layer structure, an argument based on the interband optical transition usually leads to the lasing of transverse electric (TE) rather than transverse magnetic (TM) modes. Indeed, we observed TE-polarized emissions for the excitation of modes quantized along a one-dimensional (Fabry-Perot) orbit. However, when selectively pumping modes quantized along a diamond-shaped ray orbit, we observed TM-polarized emissions. These unusual TM-polarized emissions can be explained by the fact that the incident angles of the diamond-shaped orbit are very close to the Brewster angle, making corresponding TE modes too leaky to be excited. This mode-dependent polarization leads us to propose a microcavity laser diode with the function of polarization switching.",

keywords = "Brewster angle, Laser diode, Microcavity, Polarization switching, Transverse electric emission, Transverse magnetic emission",

author = "Takehiro Fukushima and Susumu Shinohara and Satoshi Sunada and Takahisa Harayama and Koichiro Sakaguchi and Yasunori Tokuda",

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AU - Fukushima, Takehiro

AU - Shinohara, Susumu

AU - Sunada, Satoshi

AU - Harayama, Takahisa

AU - Sakaguchi, Koichiro

AU - Tokuda, Yasunori

PY - 2015/8/12

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N2 - We investigated the polarization characteristics of emissions from two-dimensional microcavity laser diodes. For an unstrained single-quantum-well active layer structure, an argument based on the interband optical transition usually leads to the lasing of transverse electric (TE) rather than transverse magnetic (TM) modes. Indeed, we observed TE-polarized emissions for the excitation of modes quantized along a one-dimensional (Fabry-Perot) orbit. However, when selectively pumping modes quantized along a diamond-shaped ray orbit, we observed TM-polarized emissions. These unusual TM-polarized emissions can be explained by the fact that the incident angles of the diamond-shaped orbit are very close to the Brewster angle, making corresponding TE modes too leaky to be excited. This mode-dependent polarization leads us to propose a microcavity laser diode with the function of polarization switching.

AB - We investigated the polarization characteristics of emissions from two-dimensional microcavity laser diodes. For an unstrained single-quantum-well active layer structure, an argument based on the interband optical transition usually leads to the lasing of transverse electric (TE) rather than transverse magnetic (TM) modes. Indeed, we observed TE-polarized emissions for the excitation of modes quantized along a one-dimensional (Fabry-Perot) orbit. However, when selectively pumping modes quantized along a diamond-shaped ray orbit, we observed TM-polarized emissions. These unusual TM-polarized emissions can be explained by the fact that the incident angles of the diamond-shaped orbit are very close to the Brewster angle, making corresponding TE modes too leaky to be excited. This mode-dependent polarization leads us to propose a microcavity laser diode with the function of polarization switching.

KW - Brewster angle

KW - Laser diode

KW - Microcavity

KW - Polarization switching

KW - Transverse electric emission

KW - Transverse magnetic emission

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