Performances of organic distributed feedback (DFB) lasers made from holographic polymer dispersed liquid crystal (HPDLC) transmission gratings were greatly improved by replacing common laser dye with organic semiconductor poly(2-methoxy-5-(2′-ethyl-hexyloxy)- p -phenylenevinylene) (MEH-PPV) as the gain medium.
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Huang et al. (2014) studied this question.
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