Polymer microlasers with a suspended cavity design
Vanga, Sudheer Kumar
Bettiol, Andrew A.
Date of Issue2015
School of Physical and Mathematical Sciences
Centre for Disruptive Photonic Technologies
We report on the fabrication of microlasers with suspended cavity design in a thin layer of Rhodamine B doped SU-8 polymer using proton beam writing. Optical characterization of the fabricated three-dimensional microlasers under ambient atmosphere results in low lasing threshold of 0.5 μJ/mm2, which is an improvement by factor of 2 when compared to planar microlasers. The directional behavior is also observed in whispering gallery mode microlasers with spiral cavity design. These microlasers with suspended cavity design are not only useful in reducing the lasing threshold but also have significance in 3D photonic integrated circuits.
DRNTU::Science::Physics::Optics and light
© 2015 Elsevier. This is the author created version of a work that has been peer reviewed and accepted for publication by Optical Materials, Elsevier. It incorporates referee’s comments but changes resulting from the publishing process, such as copyediting, structural formatting, may not be reflected in this document. The published version is available at: [Article DOI: http://dx.doi.org/10.1016/j.optmat.2014.12.034].