A Random laser based on hybrid fluorescent dye and diamond nanoneedles

Ngoc My Hanh Duong, Blake Regan, Milos Toth, Igor Aharonovich*, Judith Dawes

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review


Random lasers use radiative gain and multiple scatterers in disordered media to generate light amplification. In this study, a random laser based on diamond nanoneedles that act as scatterers in combination with fluorescent dye molecules that serve as a gain medium has been demonstrated. Random lasers realized using diamond possess high spectral radiance with angle-free emission and thresholds of 0.16 mJ. The emission dependence on the pillar diameter and density is investigated, and optimum lasing conditions are measured for pillars with spacing and density of approximate to 336 +/- 40 nm and approximate to 2.9 x 10(10) cm(-2). Our results expand the application space of diamond as a material platform for practical, compact photonic devices, and sensing applications.

Original languageEnglish
Article number1800513
Number of pages5
JournalPhysica Status Solidi - Rapid Research Letters
Issue number2
Early online date29 Oct 2018
Publication statusPublished - 1 Feb 2019


  • diamond
  • nanoneedles
  • random lasers
  • reactive ion etching


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