Multiphoton absorption studies in aqueous solutions of rhodamine 6G laser dye using transient thermal lens technique

1999 ◽  
Author(s):  
C. V. Bindhu ◽  
S. S. Harilal ◽  
V. Bindu ◽  
V. P. N. Nampoori ◽  
C. P. G. Vallabhan
Keyword(s):  
Aqueous Solutions ◽  
Thermal Lens ◽  
Rhodamine 6G ◽  
Multiphoton Absorption ◽  
Laser Dye ◽  
Absorption Studies ◽  
Transient Thermal

SOLVENT EFFECT ON ABSOLUTE FLUORESCENCE QUANTUM YIELD OF RHODAMINE 6G DETERMINED USING TRANSIENT THERMAL LENS TECHNIQUE

1999 ◽  
Vol 13 (16) ◽  
pp. 563-576 ◽  
Author(s):  
C. V. BINDHU ◽  
S. S. HARILAL ◽  
V. P. N. NAMPOORI ◽  
C. P. G. VALLABHAN
Keyword(s):  
Quantum Yield ◽  
Thermal Lens ◽  
Fluorescence Quantum Yield ◽  
Rhodamine 6G ◽  
Excited State Absorption ◽  
Fluorescence Yield ◽  
Dual Beam ◽  
Yield Values ◽  
Transient Thermal ◽  
Absolute Fluorescence

Dual beam thermal lens technique is successfully employed for the determination of absolute fluorescence quantum yield of rhodamine 6G laser dye in different solvents. A 532 nm radiation from a Q-switched Nd:YAG laser was used for the excitation purpose. The fluorescence quantum yield values are found to be strongly influenced by environmental effects. It has been observed that fluorescence yield is greater for rhodamine 6G in ethylene glycol system than in water or in methanol. Our results also indicate that parameters like concentration of the dye solution, aggregate formation and excited state absorption affect the absolute values of fluorescence yield significantly.

Two and Three Photon Absorption in Rhodamine 6G Methanol Solutions Using Pulsed Thermal Lens Technique

1998 ◽  
Vol 07 (04) ◽  
pp. 531-538 ◽  
Author(s):  
C. V. Bindhu ◽  
S. S. Harilal ◽  
Achamma Kurian ◽  
V. P. N. Nampoori ◽  
C. P. G. Vallabhan
Keyword(s):  
Thermal Lens ◽  
Rhodamine 6G ◽  
Photon Absorption ◽  
Two Photon Absorption ◽  
Two Photon ◽  
Dual Beam ◽  
Methanol Solutions ◽  
Thermal Lens Signal ◽  
Transient Thermal ◽  
532 Nm

Dual beam transient thermal lens studies were carried out in rhodamine 6G methanol solutions using 532 nm pulses from a frequency doubled Nd:YAG laser. Analysis of thermal lens signal shows the existence of different nonlinear processes like two photon absorption and three photon absorption phenomena along with one photon absorption. Concentration of the dye in the solution has been found to influence the occurrence of the different processes in a significant way.

Cellulose dialysis membrane containing raw clinoptilolite enhances the removal of Rhodamine 6G from aqueous solutions

2021 ◽  
Vol 321 ◽  
pp. 111113
Author(s):  
E. Estrada-Cabrera ◽  
L.R. Torres-Ferrer ◽  
G. Luna-Barcenas ◽  
R. Ramirez-Bon
Keyword(s):  
Aqueous Solutions ◽  
Rhodamine 6G ◽  
Dialysis Membrane

scholarly journals Studies on Fluorescence Efficiency and Photodegradation of Rhodamine 6G Doped PMMA Using a Dual Beam Thermal Lens Technique

2002 ◽  
Vol 20 (2-4) ◽  
pp. 99-110 ◽  
Author(s):  
Achamma Kurian ◽  
Nibu A. George ◽  
Binoy Paul ◽  
V. P. N. Nampoori ◽  
C. P. G. Vallabhan
Keyword(s):  
Thermal Lens ◽  
Fluorescence Quantum Yield ◽  
Laser Excitation ◽  
Rhodamine 6G ◽  
Fluorescence Emission ◽  
Concentration Quenching ◽  
Dye Molecules ◽  
Dual Beam ◽  
Fluorescence Efficiency ◽  
Absolute Fluorescence

In this paper we report the use of the dual beam thermal lens technique as a quantitative method to determine absolute fluorescence quantum efficiency and concentration quenching of fluorescence emission from rhodamine 6G doped Poly(methyl methacrylate) (PMMA), prepared with different concentrations of the dye. A comparison of the present data with that reported in the literature indicates that the observed variation of fluorescence quantum yield with respect to the dye concentration follows a similar profile as in the earlier reported observations on rhodamine 6G in solution. The photodegradation of the dye molecules under cw laser excitation is also studied using the present method.

The effect of electrolytes on the sensitivity of the thermal-lens determination in aqueous solutions

2009 ◽  
Vol 64 (2) ◽  
pp. 87-92
Author(s):  
A. A. Zhirkov ◽  
S. N. Bendrysheva ◽  
M. A. Proskurnin ◽  
N. Yu. Ragozina ◽  
B. K. Zuev
Keyword(s):  
Aqueous Solutions ◽  
Thermal Lens
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