10.1021/acsphotonics.6b00983.s001
Han Zhang
Han
Zhang
Anirudh Balram
Anirudh
Balram
Dennis Desheng Meng
Dennis Desheng
Meng
Yuze Sun
Yuze
Sun
Optofluidic Lasers with Monolayer Gain at the Liquid–Liquid
Interface
American Chemical Society
2017
monolayer gain
self-assembly process deterministically
interface
surface-gain geometry optofluidic laser
report optofluidic lasers
surface immobilization method
monolayer gain material
2017-02-02 00:00:00
Journal contribution
https://acs.figshare.com/articles/journal_contribution/Optofluidic_Lasers_with_Monolayer_Gain_at_the_Liquid_Liquid_Interface/4650313
We
report optofluidic lasers with a monolayer gain material that
self-assembles at the two-phase liquid–liquid interface. The
self-assembly process deterministically introduces the gain at the
surface of a microdroplet optical cavity, where the lasing mode has
maximal interaction with the gain medium. A complete monolayer gain
can be achieved in this surface-gain geometry, giving a surface density
on the order of 10<sup>14</sup> cm<sup>–2</sup>, which proves
to be difficult, if not impossible, to achieve in the monolayer gain
created at the solid–liquid interface via the surface immobilization
method. We demonstrated that the lasing characteristics are drastically
different between the gain material that is confined to the liquid–liquid
interface and that homogeneously distributed in the bulk liquid solution.
Our study reveals the unique capabilities of the surface-gain geometry
optofluidic laser, which can be developed into a novel sensing platform
to study biophysical and biochemical processes at the molecular level
and has vast applications in biomedical diagnostics.