@article{HeydariFlehrStumpe2013, author = {Heydari, Esmaeil and Flehr, Roman and Stumpe, Joachim}, title = {Influence of spacer layer on enhancement of nanoplasmon-assisted random lasing}, series = {Applied physics letters}, volume = {102}, journal = {Applied physics letters}, number = {13}, publisher = {American Institute of Physics}, address = {Melville}, issn = {0003-6951}, doi = {10.1063/1.4800776}, pages = {4}, year = {2013}, abstract = {Threshold reduction and emission enhancement are reported for a gold nanoparticle-based waveguided random laser, exploiting the localized surface plasmon resonance excitation. It was experimentally found that a proper thickness of the spacer layer between the gold nanoparticles and the gain layer enhances the random laser performance. It tunes the coupling between the gain polymer and the gold nanoparticles and avoids the quenching of emission in close contact to the gold nanoparticles which is considered as one of the main sources of loss in the current laser system. (C) 2013 American Institute of Physics. [http://dx.doi.org/10.1063/1.4800776]}, language = {en} }