Relationship between photonic band structure and emission characteristics of a polymer distributed feedback laser

Article

关键词: SEMICONDUCTING POLYMER;    STIMULATED-EMISSION;    FILMS;    MICROCAVITIES;    GAPS;    GAIN;   

DOI  :  10.1103/PhysRevB.64.125122

来源: SCIE

【 摘 要 】

We present an experimental study of the emission characteristics and photonic band structure of a distributed feedback polymer laser, based on the material poly[2-methoxy-5-(2'-ethylhexyloxy)-1,4-phenylene vinylene]. We use measurements of the photonic band dispersion to explain how the substrate microstructure modifies both spontaneous and stimulated emission. The lasing structure exhibits a one-dimensional photonic band gap around 610 nm, with lasing occurring at one of the two associated band edges. The band edge (frequency) selection mechanism is found to be a difference in the level of output coupling of the modes associated with the two band edges. This is a feature of the second-order distributed feedback mechanism we have employed and is clearly evident in the measured photonic band structure.

【 授权许可】

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