Bi-chromatic random laser from alumina porous ceramic infiltrated with rhodamine B

Marinho, S J; Jesus, L.M.; Barbosa, L. B.; Ardila, D. Reyes; Alencar, Márcio A. R. C.; Rodrigues, José J.

doi:10.1088/1612-2011/12/5/055801

Cited by 28 publications

(18 citation statements)

References 42 publications

(52 reference statements)

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“…Dye-based RLs are highly efficient, and have been used as a platform for demonstration of optical effects such as the bichromatic emission due to monomers and dimers in Rhodamines [15][16][17], multi-photon excitation [18][19], and low spatial coherence [20]. In spite of the promising characteristics of dye-based RLs, the dye photodegradation, enhanced due to the presence of the scatterers is a drawback for the basic investigation and practical application of these systems [21,23].…”

Section: Introductionmentioning

confidence: 99%

Observation of photonic paramagnetic to spin-glass transition in a specially designed TiO_2 particle-based dye-colloidal random laser

et al. 2016

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By using specially designed nanoparticles scatterers which prevents photodegradation of the dye, we present clear demonstration of replica symmetry break and a photonic paramagnetic to spin-glass phase transition in a random laser operating in the incoherent feedback regime based on ethanol solution of Rhodamine 6G and amorphous TiO 2 nanoparticles. PACS number(s): 42.55. Zz, 42.55.Mv, 75.50.Lk. 3

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Section: Introductionmentioning

confidence: 99%

Observation of photonic paramagnetic to spin-glass transition in a specially designed TiO_2 particle-based dye-colloidal random laser

et al. 2016

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“…• Bi-chromatic random laser from alumina porous ceramic infiltrated with rhodamine B-the potential of alumina porous ceramic, with controlled pore size distribution, as a random laser host is investigated [52].…”

Section: • Random Laser In Biological Tissues Impregnated With a Fluomentioning

confidence: 99%

Introducing theLaser PhysicsandLaser Physics Lettershighlights of 2015

McKenna¹

2016

Laser Phys. Lett.

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The International Year of Light 2015 was a landmark for the laser and optics community pointing the way to a bright future for humanity and the environment. It is with great satisfaction that Laser Physics and Laser Physics Letters have published many notable articles that have contributed to the development of light-based technologies and breakthroughs in photonics. In recognition of their high quality, we present a selection of some of the most popular articles published by Laser Physics and Laser Physics Letters throughout 2015, all of which are believed to have the potential to make a high impact on future research directions. Those chosen are recognised for their high-interest with readers and importance in the field, providing a snapshot of the broad subject coverage and international make-up of both journals.Starting this year, we will be recognising and announcing annual highlights of a previous year for both journals. We hope that you find these highlights useful and look forward to publishing more cutting-edge work in the year ahead.Summary of the highlights articles: Physics of lasers• • Experimental investigation of the light shift effect in an optical-magnetic double resonance system-an experimental scheme for studying the light shift effect in an optical magnetic double resonance system by using 4 He atoms is demonstrated [3]. • Enhanced random lasing from a colloidal CdSe quantum dot-Rh6G system-randomlaser action in a system where optical amplification is provided by colloidal CdSe quantum dots triggered by the emission from Rhodamine 6 G is reported [4].• Ultra-short pulse generation in the hybridly mode-locked erbium-doped all-fiber ring laser with a distributed polarizer-ultra-short pulse generation in a dispersion-managed erbium-doped all-fiber ring laser hybridly mode-locked with boron nitride-doped singlewalled carbon nanotubes, in co-action with a nonlinear polarization evolution in the ring cavity with a distributed polarizer, is reported for the first time [5].• Analysis of pump excited state absorption and its impact on laser efficiency-a model to quantify the effect of excited state absorption at the pump wavelength on laser efficiency, threshold and heating is developed [6]. Fibre optics and fibre lasers• 80 fs passively mode-locked Er-doped fiber laser-an Er-doped laser that has an all-fiber design, including the dispersion compensation and external compression stages, forming a robust and compact device, is reported [7].• Bound-state fiber laser mode-locked by a graphene-nanotube saturable absorbermultiple bound states in a linear-cavity fiber laser mode-locked by a mixture of graphene and single-walled carbon nanotubes is experimentally observed [8]. Jarlath McKenna Publisher, Laser Physics and Laser Physics Letters Introducing the Laser Physics and Laser Physics Letters highlights of 2015Laser Physics Letters

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“…However, in spite of the large amount of studies related to the PL properties of dyes doped sol-gel samples, only few reports on RL emission were presented. 15,[25][26][27][28] For instance, besides the work reported in Ref.…”

Section: Introductionmentioning

confidence: 95%

Single bead near-infrared random laser based on silica-gel infiltrated with Rhodamine 640

Moura

Barbosa-Silva

Dominguez

et al. 2018

Journal of Applied Physics

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Photoluminescence properties of single bead silica-gel (SG) embedded with a laser-dye were studied aiming at the operation of near-infrared (NIR) Random Lasers (RLs). The operation of RLs in the NIR spectral region is especially important for biological applications since the optical radiation has deep tissue penetration with negligible damage. Since laser-dyes operating in the NIR have poor stability and are poor emitters, ethanol solutions of Rhodamine 640 (Rh640) infiltrated in SG beads were used. The Rh640 concentrations in ethanol varied from 10 À5 to 10 À2 M and the excitation at 532 nm was made by using a 7 ns pulsed laser. The proof-of-principle RL scheme herein presented was adopted in order to protect the dye-molecules from the environment and to favor formation of aggregates. The RL emission from %650 nm to 720 nm, beyond the typical Rh640 monomer and dimer wavelengths emissions range, was attributed to the trade-off between reabsorption and reemission processes along the light pathways inside the SG bead and the contribution of Rh640 aggregates.

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Bi-chromatic random laser from alumina porous ceramic infiltrated with rhodamine B

Cited by 28 publications

References 42 publications

Observation of photonic paramagnetic to spin-glass transition in a specially designed TiO_2 particle-based dye-colloidal random laser

Observation of photonic paramagnetic to spin-glass transition in a specially designed TiO_2 particle-based dye-colloidal random laser

Introducing theLaser PhysicsandLaser Physics Lettershighlights of 2015

Single bead near-infrared random laser based on silica-gel infiltrated with Rhodamine 640

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