Thermally Activated Longitudinal Optical Phonon Scattering of a 3.8 THz GaAs Quantum Cascade Laser
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概要
- 論文の詳細を見る
Thermally activated longitudinal optical (LO) phonon scattering time ($\tau_{\text{thermal LO}}$) of excited subbands in a 3.8 THz quantum cascade laser is studied. The active region used herein is based on a LO phonon depopulation scheme. A single plasmon waveguide was used for optical confinement. By calculating the temperature dependence of threshold current density ($J_{\text{th}}$) and comparing with the experiment, $\tau_{\text{thermal LO}}$ limiting the characteristic temperature of $J_{\text{th}}$ is estimated: $\tau_{\text{thermal LO}}$ is 246 ns at 5 K, which rapidly decreases 15 ps when temperature rises up to 100 K.
- Japan Society of Applied Physicsの論文
- 2009-02-25
著者
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Ohno Hideo
Laboratory For Electronic Intelligent Systems
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Ohtani Keita
Laboratory For Nanoelectronics And Spintronics Research Institute Of Electrical Communication Tohoku
-
Ohtani Keita
Laboratory For Electronic Intelligent Systems Research Institute Of Electrical Communication Tohoku
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Ohno Hideo
Laboratory For Nanoelectronics And Spintronics Research Institute Of Electrical Communication Tohoku
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Lin Tsung-tse
Laboratory For Nanoelectronics And Spintronics Research Institute Of Electrical Communication Tohoku
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