Anisotropic polarization characteristics of lasing and spontaneoussurface and edge emissions from deep-ultraviolet ( λ ≈ 240 nm ) AlGaN multiple-quantum-well lasers

Anisotropic polarization characteristics of lasing and spontaneoussurface and edge emissions from deep-ultraviolet ( λ ≈ 240 nm ) AlGaN multiple-quantum-well lasers

The authors report on their experimental discovery of a transverse-magnetic-field (TM)-mode polarization of lasing and spontaneous edge emissions (anisotropic polarization emissions) above and below the lasing threshold from the AlGaN multiple-quantum-well (MQW) laser at 240.8 nm . The deep ultravio...

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Veröffentlicht in:Applied physics letters 2006-07, Vol.89 (4), p.041126-041126-3
Hauptverfasser: Kawanishi, Hideo, Senuma, Masanori, Nukui, Takeaki
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container_title Applied physics letters
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creator Kawanishi, Hideo
Senuma, Masanori
Nukui, Takeaki
description The authors report on their experimental discovery of a transverse-magnetic-field (TM)-mode polarization of lasing and spontaneous edge emissions (anisotropic polarization emissions) above and below the lasing threshold from the AlGaN multiple-quantum-well (MQW) laser at 240.8 nm . The deep ultraviolet MQW emitted very weak or no surface emission (anisotropic polarization emission) below the threshold. On the other hand, the AlGaN multiple-quantum-well laser at 355.1 nm operated in the transverse-electric-field (TE) mode above the threshold, and homogeneous high-intensity spontaneous surface emission and both TE- and TM-mode edge emissions (isotropic emissions) were observed below the threshold.
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The deep ultraviolet MQW emitted very weak or no surface emission (anisotropic polarization emission) below the threshold. On the other hand, the AlGaN multiple-quantum-well laser at 355.1 nm operated in the transverse-electric-field (TE) mode above the threshold, and homogeneous high-intensity spontaneous surface emission and both TE- and TM-mode edge emissions (isotropic emissions) were observed below the threshold.</abstract><pub>American Institute of Physics</pub><doi>10.1063/1.2236792</doi></addata></record>
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title Anisotropic polarization characteristics of lasing and spontaneoussurface and edge emissions from deep-ultraviolet ( λ ≈ 240 nm ) AlGaN multiple-quantum-well lasers
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