Low-Threshold Conjugated Polymer Distributed Feedback Lasers on InP Substrate |
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| Authors: | ZHANG Su-Mei ZHANG Ding-Ke MA Dong-Ge |
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| Affiliation: | State Key Laboratory of Polymer Physics and Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Graduate School of Chinese Academy of Sciences, Changchun 130022State Key Laboratory of Integrated Optoelectronics, College of Electronic Science and Engineering, Jilin University, Changchun 130021 |
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| Abstract: | We demonstrate a low threshold polymer solid state thin-film distributed feedback (DFB) laser on an InP substrate with the DFB structure. The used gain medium is conjugated polymer poly[2-methoxy-5-(2-ethylhexyloxy)-1,4-phenylenevinylene] (MEH-PPV) doped polystyrene (PS) and formed by drop-coating method. The second order Bragg scattering region on the InP substrate gave rise to strong feedback, thus a lasing emission at 638.9nm with a line width of 1.2nm is realized when pumped by a 532nm frequency-doubled Nd:YAG pulsed laser. The devices show a laser threshold as low as 7nJ/pulse. |
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| Keywords: | 42.55.-f 42.70.Jk |
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