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- W2022939729 abstract "We design a quasi-L2 (qL2) photonic crystal nano-cavity (PCN), which has a very small mode volume V <sub xmlns:mml=http://www.w3.org/1998/Math/MathML xmlns:xlink=http://www.w3.org/1999/xlink>m</sub> of 1.6(λ/2n) <sup xmlns:mml=http://www.w3.org/1998/Math/MathML xmlns:xlink=http://www.w3.org/1999/xlink>3</sup> and a reasonably high Q value of 15,000 theoretically. By manipulating the radii of air holes, the mode spacing is extended and a single defect mode operation within the gain spectrum of InAs QDs is achieved. A room temperature operation InAs QDs PCN laser with an ultra-low threshold power of 0.8 μW, corresponding to effective absorption power of less than 100 nW, is realized. Fitting the measured data to the theoretical estimation by coupled rate equation model, a high spontaneous emission coupling efficiency of 80 % is obtained. We ascribe this encouraging performance to strong Purcell effect as a result of a small V <sub xmlns:mml=http://www.w3.org/1998/Math/MathML xmlns:xlink=http://www.w3.org/1999/xlink>m</sub> and high coupling efficiency of the cavity." @default.
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- W2022939729 date "2011-06-01" @default.
- W2022939729 modified "2023-09-23" @default.
- W2022939729 title "Single mode operation 1.3 μm InAs quantum dot lasers based on small mode volume qL2 photonic crystal nano-cavity" @default.
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- W2022939729 doi "https://doi.org/10.1109/inec.2011.5991704" @default.
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