Heavy-water-based solutions of rhodamine dyes: photophysical properties and laser operation

Sinha, Sucharita; Ray, Alok K.; Kundu, Snehasis; Sasikumar, S.; Dasgupta, K.

doi:10.1007/s00340-002-0932-6

Cited by 21 publications

(17 citation statements)

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“…[1][2][3][4][5] Compared to other commercial multiwavelength laser sources, laser dyes offer noticeable advantages such as low cost, broad spectral coverage from ultraviolet to near-infrared by changing dyes, and high-average power pulsed dye laser operation. [6,7] But known solid-state (polymer) dye lasers, [6][7][8][9][10] as well as organic solvent-based dye lasers [4,11] require frequent replenishment of the rapidly degrading dye media. Use of organic solvents additionally poses disposal concerns and safety hazards due to the flammable nature of these solvents, which are generally used in large bulk quantities in dye lasers.…”

Section: Introductionmentioning

confidence: 99%

Molecular Encapsulation of Fluorescent Dyes Affords Efficient Narrow‐band Dye Laser Operation in Water

et al. 2010

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A water-based narrow-band high-efficiency dye laser was designed by means of a supramolecular host-guest chemical approach. The lasing characteristics of rhodamine B and sulforhodamine B (Kiton Red S) dyes in aqueous solution with the macrocyclic host cucurbit[7]uril (CB7) as additive were investigated in a narrow-band dye laser setup. Significant improvements in both photostability and thermo-optical properties of the aqueous CB7-complexed dye systems were observed as compared to the uncomplexed dyes in ethanol solution. The tuning curves for the new dye-CB7-water systems were constructed by measuring the laser output at different wavelengths, which showed similar peak efficiencies and red-shifted gains compared to the ethanolic solutions of the dyes, while dye laser operation revealed comparable pump threshold energies and slope efficiencies. The combined results render the dye-CB7-water system an attractive active medium for high-repetition rate dye laser operation.

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Section: Introductionmentioning

confidence: 99%

Molecular Encapsulation of Fluorescent Dyes Affords Efficient Narrow‐band Dye Laser Operation in Water

et al. 2010

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“…As a first quality criterion for using cucurbit [7]uril as an additive (1 mM), the brightness of the aqueous fluorescent dye solutions increases (with few exceptions, Table 2) [5,6]. While the increased brightness may be partially due to the protection of the complexed dye from bulk water, which is known to somewhat quench rhodamines and xanthene dyes [94,95], the effect for the cucurbituril is quite exceptional, because the addition of other macrocyclic hosts like cyclodextrins or calixarenes leads frequently to fluorescence quenching and therefore a reduced brightness [74,92,96,97].…”

Section: Stabilization Of Aqueous Fluorescent Dye Solutions With Cucumentioning

confidence: 97%

Squeezing Fluorescent Dyes into Nanoscale Containers—The Supramolecular Approach to Radiative Decay Engineering

Nau

Hennig

Koner

2007

Springer Series on Fluorescence

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“…To address these issues, it is worth to explore the options for laser dyes with high quantum yield with sufficient photostability in aqueous medium. Several attempts have been reported by using surfactants, emulsifiers and alcoholic co‐solvents as additives to achieve water‐based dye lasers . However, these systems display laser action with diminished efficiency, poor photostability and distorted beam profile due to use of large amounts of additives as compared to neat organic solvents.…”

Section: Introductionmentioning

confidence: 99%

Ultra‐Bright Rhodamines with Sulfobutylether‐β‐Cyclodextrin: A Viable Supramolecular Dye Laser in Aqueous Medium

et al. 2018

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Although aqueous dye lasers are much sought after, they have been of no practical use, as laser dyes show a strong tendency for aggregation in water, thus diminishing their optical output. Contributing towards this shortcoming, we studied the noncovalent interactions of two prominent laser dyes, namely, rhodamine 6G and rhodamine B, with a water soluble macrocyclic host, sulfobutylether-β-cyclodextrin (SBE βCD). Spectral changes in the absorption and fluorescence behavior of dyes in presence of the SBE βCD host indicated adequate complex formation between dye and host (K∼10 M ). A combination of various photophysical parameters evaluated from measurements such as Job plot, changes in the fluorescence lifetime/anisotropy values, and favorable thermodynamic parameters from isothermal titration calorimetric measurements adjudicated a 1 : 1 stoichiometric complex formation between dye and SBE βCD host. Consequently, SBE βCD prevents dye aggregation/adsorption and present rhodamine dyes in their monomeric forms with enhanced fluorescence yield and brightness. These vital parameters were utilized to optimize and demonstrate cost-effective supramolecular broad-band and narrow-band aqueous dye laser systems with improved lasing efficiencies (∼25 % higher for the SBE βCD : RhB system and ∼10 % higher for SBE βCD : Rh6G system), better beam profile, and enhanced durability compared to the respective dyes in optically matched ethanol solutions.

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Heavy-water-based solutions of rhodamine dyes: photophysical properties and laser operation

Cited by 21 publications

References 0 publications

Molecular Encapsulation of Fluorescent Dyes Affords Efficient Narrow‐band Dye Laser Operation in Water

Molecular Encapsulation of Fluorescent Dyes Affords Efficient Narrow‐band Dye Laser Operation in Water

Squeezing Fluorescent Dyes into Nanoscale Containers—The Supramolecular Approach to Radiative Decay Engineering

Ultra‐Bright Rhodamines with Sulfobutylether‐β‐Cyclodextrin: A Viable Supramolecular Dye Laser in Aqueous Medium

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