Microcavity Laser Based on a Single Molecule Thick High Gain Layer

Alexander Palatnik, Hagit Aviv, Yaakov R. Tischler

Research output: Contribution to journalArticlepeer-review

9 Scopus citations

Abstract

The ability to confine excitons within monolayers has led to fundamental investigations of nonradiative energy transfer, super-radiance, strong light-matter coupling, high-efficiency light-emitting diodes, and recently lasers in lateral resonator architectures. Vertical cavity surface emitting lasers (VCSELs), in which lasing occurs perpendicular to the device plane, are critical for telecommunications and large-scale photonics integration, however strong optical self-absorption and low fluorescence quantum yields have thus far prevented coherent emission from a monolayer microcavity device. Here we show lasing from a monolayer VCSEL using a single molecule thick film of amphiphilic fluorescent dye, assembled via Langmuir-Blodgett deposition, as the gain layer. Threshold was observed when 5% of the molecules were excited (4.4 μJ/cm2). At this level of excitation, the optical gain in the monolayer exceeds 1056 cm-1. High localization of the excitons in the VCSEL gain layer can enhance their collective emission properties with Langmuir-Blodgett deposition presenting a paradigm for engineering the high gain layers on the molecular level.

Original languageEnglish
Pages (from-to)4514-4520
Number of pages7
JournalACS Nano
Volume11
Issue number5
DOIs
StatePublished - 23 May 2017

Bibliographical note

Publisher Copyright:
© 2017 American Chemical Society.

Keywords

  • dye lasers
  • microcavities
  • monolayers
  • organic materials

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