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- W2060221113 abstract "Abstract : Extremely low threshold lasers are very much in demand for opt-electronic integrated circuits (OEICs), such lasers can realize dreams of optical parallel processing systems and optical computing, because very dense integration of optical devices requires low heat generation and low electric power consumption. Recently, submilliampere lasers have been reported from several laboratories, but these lasers require high-reflection facet coating, which prevents high light output power. The lowest threshold current achieved with an uncoated device had been 1.8mA under pulsed operation and 2.5mA under continuous wave (CW) operation. We have developed a new type buried heterostructure (BH) laser using single-step MOCVD on a nonplanar GaAs substrate. Our laser has the lowest threshold current value of 0.88mA and the highest energy conversion efficiency of 42% at lmW/facet at room temperature (RT) under CW conditions without facet coating. Then we have fabricated 102 laser arrays and realized their uniform operations." @default.
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- W2060221113 date "1991-01-01" @default.
- W2060221113 modified "2023-09-27" @default.
- W2060221113 title "Submilliampere-threshold multi-quantum-well AlGaAs lasers their integration of more than 100 lasers" @default.
- W2060221113 doi "https://doi.org/10.1063/1.40643" @default.
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