Nanocellulose-based random laser

Gleice Germano, Yan Dalton Machado, Lucas Martinho, Greice K. B. Costa, Susete N. Fernandes, M. Helena Godinho, Jake Fontana, Anderson S. L. Gomes, Isabel C. S. Carvalho

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

In this work, we systematically investigated the spectral analysis of the random laser action of Rhodamine6G (Rh6G) in Ethylene Glycol (EG) solution with cellulose nanocrystals (CNCs) as scatters to provide random feedback. A random laser (RL), different form a conventional Fabry Perot cavity laser, bases the optical feedback on scattering processes in a nano or submicron structured media, where the gain media is appropriately pumped to supply the necessary elements for laser emission [1]. Also, another RL architecture was investigated, where the CNCs+Rh6G composite was placed on a glass slide substrate, which introduced a 4% feedback half-cavity. Fig 1 shows SEM images of cellulose flakes and CNCs rods, which were produced according literature [2]. The RL spectral emission from the NCF+Rh6G (15mg/mL CNCs) suspension is shown in Fig 2a, where the spectrum for different excitation energies, strongly reduced from 50.6 nm to 5.6 nm at its full width at half maximum (FWHM).

Original languageEnglish
Title of host publication2019 Conference on Lasers and Electro-Optics Europe and European Quantum Electronics Conference, CLEO/Europe-EQEC 2019
PublisherInstitute of Electrical and Electronics Engineers Inc.
ISBN (Electronic)9781728104690
DOIs
Publication statusPublished - Jun 2019
Event2019 Conference on Lasers and Electro-Optics Europe and European Quantum Electronics Conference, CLEO/Europe-EQEC 2019 - Munich, Germany
Duration: 23 Jun 201927 Jun 2019

Conference

Conference2019 Conference on Lasers and Electro-Optics Europe and European Quantum Electronics Conference, CLEO/Europe-EQEC 2019
CountryGermany
CityMunich
Period23/06/1927/06/19

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