jp6b05737_si_001.pdf (1.68 MB)
Hybrid Multilayered Plasmonic Nanostars for Coherent Random Lasing
journal contribution
posted on 2016-10-04, 00:00 authored by Battulga Munkhbat, Johannes Ziegler, Hannes Pöhl, Christian Wörister, Dmitry Sivun, Markus C. Scharber, Thomas A. Klar, Calin HrelescuHere,
we report that hybrid multilayered plasmonic nanostars can
be universally used as feedback agents for coherent random lasing
in polar or nonpolar solutions containing gain material. We show that
silver-enhancement of gold nanostars reduces the pumping threshold
for coherent random lasing substantially for both a typical dye (R6G)
and a typical fluorescent polymer (MEH-PPV). Further, we reveal that
the lasing intensity and pumping threshold of random lasers based
on silver-enhanced gold nanostars are not influenced by the silica
coating, in contrast to gold nanostar-based random lasers, where silica-coated
gold nanostars support only amplified spontaneous emission but no
coherent random lasing.