Room-temperature continuous-wave lasing from InAs GaAs quantum dot laser grown by molecular beam epitaxy

Quantum dot lasers are predicted to have proved lasing characteristics compared to quantum well and quantum wire lasers. We report on quantum dot lasers with active media of vertically stacked InAs quantum dots layers grown by molecular beam epitaxy. The laser diodes were fabricated and the threshold current density of 220 A/cm(2) was achieved at room temperature with lasing wavelength of 951 nm. The characteristic temperature To was measured to be 333K and 157K for the temperature range of 40-180K and 180-300K, respectively.

Quantum dot lasers are predicted to have proved lasing characteristics compared to quantum well and quantum wire lasers. We report on quantum dot lasers with active media of vertically stacked InAs quantum dots layers grown by molecular beam epitaxy. The laser diodes were fabricated and the threshold current density of 220 A/cm(2) was achieved at room temperature with lasing wavelength of 951 nm. The characteristic temperature To was measured to be 333K and 157K for the temperature range of 40-180K and 180-300K, respectively.

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Chinese Inst Electr.; IEEE Electron Devices Soc.; IEEE Solid State Circuits Soc.; Japan Soc Appl Phys.; URSI Commiss D.; IEE, Electr Div, UK.; Korea Inst Telemat & Electr.; IEEE Beijing Sect.; Mat Res Soc.; Natl Nat Sci Fdn China.

Chinese Acad Sci, Inst Semicond, Lab Semicond Mat Sci, Beijing 100083, Peoples R China

Chinese Inst Electr.; IEEE Electron Devices Soc.; IEEE Solid State Circuits Soc.; Japan Soc Appl Phys.; URSI Commiss D.; IEE, Electr Div, UK.; Korea Inst Telemat & Electr.; IEEE Beijing Sect.; Mat Res Soc.; Natl Nat Sci Fdn China.