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DETERMINISTIC FREQUENCY TUNING OF QUANTUM DOTS IN PHOTONIC CRYSTAL MEMBRANES USING MICRO-LASER PROCESSING
DETERMINISTIC FREQUENCY TUNING OF QUANTUM DOTS IN PHOTONIC CRYSTAL MEMBRANES USING MICRO-LASER PROCESSING
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机译:利用微激光加工确定光子晶体膜中量子点的确定频率
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摘要
Emission frequency of quantum dots in a photonic crystal membrane can be tuned by laser light treatment. For example, a focused laser can heat InAs quantum dots embedded within a 200 nm photonic crystal GaAs membrane. At temperatures above about 600° C., indium atoms from the quantum dots and gallium atoms from the membrane interdiffuse, alloying the quantum dots with the surrounding membrane. This causes the quantum dots to become more gallium rich, which shifts the emission to higher frequencies.
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