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Optically pumped lasing in single crystals of organometal halide perovskites prepared by cast-capping method
- Source :
- Applied Physics Letters. 108:261105
- Publication Year :
- 2016
- Publisher :
- AIP Publishing, 2016.
-
Abstract
- A simple “cast-capping” method is adopted to prepare single-crystal perovskites of methyl ammonium lead bromide (CH3NH3PbBr3). By capping a CH3NH3PbBr3 solution casted on one substrate with another substrate such as glass, mica, and distributed Bragg reflector (DBR), the slow evaporation of solvent enables large-size cubic crystals to grow between the two substrates. Under optical pumping, edge-emitting lasing is observed based on Fabry–Perot resonation between parallel side facets of a strip-shaped crystal typically with a lateral cavity length of a few tens of μm. On the other hand, vertical-cavity surface-emitting lasing (VCSEL) is obtained from a planar crystal grown between two DBRs with a cavity thickness of a few μm. Simultaneous detection of those edge- and surface-emissions reveals that the threshold excitation fluence of VCSEL is higher than that of the edge-emitting lasing due to thickness gradient in the planar crystal.
- Subjects :
- 010302 applied physics
Materials science
Physics and Astronomy (miscellaneous)
business.industry
Physics::Optics
02 engineering and technology
Substrate (electronics)
021001 nanoscience & nanotechnology
Distributed Bragg reflector
01 natural sciences
Evaporation (deposition)
Fluence
Vertical-cavity surface-emitting laser
Crystal
Optical pumping
0103 physical sciences
Optoelectronics
0210 nano-technology
business
Lasing threshold
Subjects
Details
- ISSN :
- 10773118 and 00036951
- Volume :
- 108
- Database :
- OpenAIRE
- Journal :
- Applied Physics Letters
- Accession number :
- edsair.doi...........95540e7ad20850031451735314b6b348