Thin-film energy-transfer dye lasers in spectral region of near ultraviolet to violet

1985 ◽  
Vol 68 (5) ◽  
pp. 61-67
Author(s):  
Shinzo Muto ◽  
Fumikazu Shiba ◽  
Seigo Sano ◽  
Chiaki Ito ◽  
Humio Inaba
Keyword(s):  
Thin Film ◽  
Energy Transfer ◽  
Spectral Region ◽  
Dye Lasers ◽  
Near Ultraviolet

Solid thin-film energy-transfer dye lasers

1987 ◽  
Vol 70 (1) ◽  
pp. 21-31
Author(s):  
Shinzo Muto ◽  
Fumikazu Shiba ◽  
Yoshitsugu Iijima ◽  
Kiminori Hattori ◽  
Chiaki Ito
Keyword(s):  
Thin Film ◽  
Energy Transfer ◽  
Dye Lasers

Highly reflective thin film coatings for high power applications of micro scanning mirrors in the NIR-VIS-UV spectral region

2005 ◽  
Author(s):  
Thilo Sandner ◽  
Jan Uwe Schmidt ◽  
Harald Schenk ◽  
Hubert Lakner ◽  
Minghong Yang ◽  
...  
Keyword(s):  
Thin Film ◽  
High Power ◽  
Spectral Region ◽  
Film Coatings ◽  
Thin Film Coatings

Energy transfer from Tb3+ to Eu3+ in ZnLaB5O10: A candidate for near ultraviolet LED pumped phosphor

2021 ◽  
Vol 231 ◽  
pp. 117821
Author(s):  
Ruirui Yang ◽  
Chao Yin ◽  
Yan Gao ◽  
Xianju Zhou ◽  
Pengfei Jiang ◽  
...  
Keyword(s):  
Energy Transfer ◽  
Near Ultraviolet

scholarly journals Bioconjugatable, PEGylated hydroporphyrins for photochemistry and photomedicine. Narrow-band, red-emitting chlorins

2016 ◽  
Vol 40 (9) ◽  
pp. 7721-7740 ◽  
Author(s):  
Mengran Liu ◽  
Chih-Yuan Chen ◽  
Amit Kumar Mandal ◽  
Vanampally Chandrashaker ◽  
Rosemary B. Evans-Storms ◽  
...  
Keyword(s):  
Spectral Region ◽  
Narrow Band ◽  
Fluorescence Band ◽  
Near Ultraviolet

PEGylated chlorins are soluble in water, can be excited in the near-ultraviolet, and exhibit a relatively narrow fluorescence band in the red spectral region.

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.

scholarly journals Energy Transfer Study on Tb3+/Eu3+ Co-Activated Sol-Gel Glass-Ceramic Materials Containing MF3 (M = Y, La) Nanocrystals for NUV Optoelectronic Devices

Materials ◽  
2020 ◽  
Vol 13 (11) ◽  
pp. 2522 ◽  
Author(s):  
Natalia Pawlik ◽  
Barbara Szpikowska-Sroka ◽  
Wojciech A. Pisarski
Keyword(s):  
Heat Treatment ◽  
Energy Transfer ◽  
Glass Ceramic ◽  
Sol Gel ◽  
Optoelectronic Devices ◽  
Emission Spectra ◽  
Ceramic Materials ◽  
Near Ultraviolet ◽  
Glass Ceramic Materials ◽  
Significant Prolongation

In the present work, the Tb3+/Eu3+ co-activated sol-gel glass-ceramic materials (GCs) containing MF3 (M = Y, La) nanocrystals were fabricated during controlled heat-treatment of silicate xerogels at 350 °C. The studies of Tb3+ → Eu3+ energy transfer process (ET) were performed by excitation and emission spectra along with luminescence decay analysis. The co-activated xerogels and GCs exhibit multicolor emission originated from 4fn–4fn optical transitions of Tb3+ (5D4 → 7FJ, J = 6–3) as well as Eu3+ ions (5D0 → 7FJ, J = 0–4). Based on recorded decay curves, it was found that there is a significant prolongation in luminescence lifetimes of the 5D4 (Tb3+) and the 5D0 (Eu3+) levels after the controlled heat-treatment of xerogels. Moreover, for both types of prepared GCs, an increase in ET efficiency was also observed (from ηET ≈ 16% for xerogels up to ηET = 37.3% for SiO2-YF3 GCs and ηET = 60.8% for SiO2-LaF3 GCs). The changes in photoluminescence behavior of rare-earth (RE3+) dopants clearly evidenced their partial segregation inside low-phonon energy fluoride environment. The obtained results suggest that prepared SiO2-MF3:Tb3+, Eu3+ GC materials could be considered for use as optical elements in RGB-lighting optoelectronic devices operating under near-ultraviolet (NUV) excitation.

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