Coumarin–BODIPY hybrids by heteroatom linkage: versatile, tunable and photostable dye lasers for UV irradiation

2015 ◽  
Vol 17 (12) ◽  
pp. 8239-8247 ◽  
Author(s):  
I. Esnal ◽  
G. Duran-Sampedro ◽  
A. R. Agarrabeitia ◽  
J. Bañuelos ◽  
I. García-Moreno ◽  
...  
Keyword(s):  
Energy Transfer ◽  
Uv Irradiation ◽  
Dye Lasers ◽  
Laser Dyes ◽  
Active Media

Coumarin–BODIPY energy transfer laser dyes have been designed and tested as versatile, tunable and photostable active media for UV irradiation.

scholarly journals Active media based on polyurethane doped with a binary dye mixture

2021 ◽  
Vol 26 (3) ◽  
pp. 24-29
Author(s):  
S. Nikolaiev ◽  
◽  
V. Pozhar ◽  
M. Dzyubenko ◽  
K. Nikolaiev ◽  
...  
Keyword(s):  
Energy Transfer ◽  
Solid State ◽  
Rhodamine 6G ◽  
Spectral Characteristics ◽  
Excitation Energy Transfer ◽  
Dye Lasers ◽  
Lasing Spectrum ◽  
Active Media ◽  
Active Elements ◽  
Sulforhodamine 101

Subject and Purpose. The article is concerned with the spectral-luminescent and lasing characteristics of the radiation from solid-state active media based on polyurethane activated by a binary mixture of dyes. The purpose of these studies is to demonstrate a possibility of the spectral range expansion of the emission from solid-state dye lasers with polyurethane active elements. Methods and Methodology. Specially prepared samples of polyurethane active media having the same donor (Rhodamine 6G) concentration but various acceptor (Sulforhodamine 101) concentrations are experimentally studied for their spectral-luminescent and lasing characteristics. Results. The main spectroscopic characteristics of Rhodamine 6G and Sulforhodamine 101 in polyurethane have been measured, the nonradiative energy transfer parameters in this molecular pair estimated. It has been demonstrated that the matrix emission spectrum can be purposefully transformed by selection of relative concentrations of dyes in the mixture. In a broadband resonator, either a single- or two-band emission with different positions and various intensities of spectral bands is observed depending on the acceptor concentration. In a dispersive resonator under the same conditions, the tuning range of the lasing spectrum expands and extends to the longer wavelengths. Conclusion. The prospects of using donor-acceptor dye mixtures for improving spectral characteristics of polyurethane active elements in solid-state dye lasers have been confirmed. It has been shown that signatures of the emission characteristics of these media are governed by the mechanism of the excitation energy transfer between dye molecules. Lasing has been obtained on polyurethane matrices with the emission wavelength tuning throughout the “green-red” region of the spectrum.

Improved Sol-Gel Materials for Efficient Solid State Dye Lasers

1993 ◽  
Vol 329 ◽  
Author(s):  
Michael Canva ◽  
Patrick Georges ◽  
Jean-Fran^ois Perelgritz ◽  
Alain Brun ◽  
Fréddric Chaput ◽  
...  
Keyword(s):  
Solid State ◽  
Physical Properties ◽  
Room Temperature ◽  
Sol Gel ◽  
Tunable Lasers ◽  
Optical Quality ◽  
Dye Lasers ◽  
Laser Dyes ◽  
Host Matrix ◽  
Host Matrices

AbstractPhotoresistant laser dyes were trapped in silica based xerogel host matrices to obtain solid state tunable lasers. For this purpose very dense xerogel samples with improved chemical and physical properties were prepared at room temperature by the sol-gel technology. The as-prepared materials were polished to obtain optical quality surfaces and were used as new lasing media.Lasing action of such different dyes as rhodamine, perylene and pyrromethene doping dense sol-gel matrices was demonstrated. Efficiencies of 30 % or lifetimes of more than 100,000 shots were achieved with different new ≤dye dopant/host matrix≥ couples. Their different performances are reviewed and discussed.

Influence of energy transfer on fluorescence and lasing properties of various laser dyes co-doped in ORMOSILs

2004 ◽  
Vol 397 (4-6) ◽  
pp. 397-401 ◽  
Author(s):  
Deliang Su ◽  
Yu Yang ◽  
Guodong Qian ◽  
Zhiyu Wang ◽  
Minquan Wang
Keyword(s):  
Energy Transfer ◽  
Laser Dyes ◽  
Co Doped

Resonance energy transfer study of laser dyes LD 489 and LD 473 with rhodamine 6G

2014 ◽  
Vol 92 (4) ◽  
pp. 302-306 ◽  
Author(s):  
H.R. Deepa ◽  
J. Thipperudrappa ◽  
H.M. Suresh Kumar
Keyword(s):  
Energy Transfer ◽  
Rhodamine 6G ◽  
Resonance Energy Transfer ◽  
Resonance Energy ◽  
Laser Dyes ◽  
Rate Parameter ◽  
Quenching Rate ◽  
Range Interaction ◽  
Time Resolved ◽  
Bimolecular Quenching

The energy transfer using two laser dyes 6,7,8,9-tetrahydro-6,8,9-trimethyl-4-(trifluoromethyl)-2H-pyrano[2,3-b][1,8]naphthyridin-2-one (LD-489) and 1,2,3,8-tetrahydro-1,2,3,3,8-pentamethyl-5-(trifluoromethyl)-7H-pyrrolo[3,2-g]quinolin-7-one (LD-473) as donors and rhodamine 6G (Rh6G) as acceptor was investigated in methanol using steady state and time resolved fluorescence spectroscopy. The bimolecular quenching rate parameter, kq, and the translation diffusion rate parameter, kd, were calculated and these values indicated that the diffusion process alone does not operate in energy transfer process. The mean diffusion length, d1, is found to be less than the Förster distance, R0, supporting the dominance of long-range interaction. The critical transfer distances determined from both the Förster equation and the half quenching concentration are close to one another, revealing that the Förster mechanism plays an important role in overall energy transfer of the donors.

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