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Lasing at three-dimensionally quantum-confined sublevel of self-organized In/sub 0.5/Ga/sub 0.5/As quantum dots by current injection

1995; Institute of Electrical and Electronics Engineers; Volume: 7; Issue: 12 Linguagem: Inglês

10.1109/68.477257

1941-0174

H. Shōji, Kohki Mukai, N. Ohtsuka, Mitsuru Sugawara, T. Uchida, Hiroshi Ishikawa,

Photonic and Optical Devices

A laser oscillation from self-organized In/sub 0.5/Ga/sub 0.5/As quantum dots is achieved at 80 K by current injection. Lasing at a three-dimensionally quantum confined sublevel of the In/sub 0.5/Ga/sub 0.5/As quantum dots is clearly demonstrated for the first time by electroluminescence and diamagnetic energy shift measurement. The results predict the possibility of ultra-low threshold current operation of quantum dot lasers.