Random lasing in organo-lead halide perovskite microcrystal networks
Abstract
We report optically pumped random lasing in planar methylammonium lead iodide perovskite microcrystal networks that form spontaneously from spin coating. Low thresholds (<200 μJ/cm2) and narrow linewidths (Δλ < 0.5 nm) reflect lasing from closed quasi-modes that result from ballistic waveguiding in linear network segments linked by scattering at the junctions. Spatio-spectral imaging indicates that these quasi-modes extend over lateral length scales >100 μm and spatially overlap with one another, resulting in chaotic pulse-to-pulse intensity fluctuations due to gain competition. These results demonstrate this class of hybrid organic-inorganic perovskite as a platform to study random lasing with well-defined, low-level disorder, and support the potential of these materials for use in semiconductor laser applications.
Document Details
- Document Type
- Pub Defense Publication
- Publication Date
- Oct 13, 2014
- Source ID
- 10.1063/1.4898703
Entities
People
- A. N. Brigeman
- A. V. Larsen
- J. B. Asbury
- Noel C Giebink
- R. Dhanker
- Russell J. Stewart
Organizations
- Defense Advanced Research Projects Agency
- Pennsylvania State University