Expansion of emission band based on energy transfer in diode-pumped microcavity dye lasers

2010 ◽  
Vol 49 (14) ◽  
pp. 2552 ◽  
Author(s):  
Masami Fukuda ◽  
Hidetaka Matsuura ◽  
Eiji Yamazaki ◽  
Hajime Sakata
Keyword(s):  
Energy Transfer ◽  
Emission Band ◽  
Dye Lasers ◽  
Diode Pumped

scholarly journals Influence of energy-transfer upconversion effect on the pulse in diode-pumped Cr :YAG passively Q-switched lasers

2003 ◽  
Vol 52 (10) ◽  
pp. 2471
Author(s):  
Yang Lin ◽  
Huang Wei-Ling ◽  
Qiu Jun-Lin ◽  
Feng Bao-Hua ◽  
Zhang Zhi-Guo ◽  
...  
Keyword(s):  
Energy Transfer ◽  
Energy Transfer Upconversion ◽  
Diode Pumped

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 Photoluminescence and energy transfer of YAG: Ce3+, Gd3+, Bi3+

2016 ◽  
Vol 06 (04) ◽  
pp. 1650029 ◽  
Author(s):  
Meidan Que ◽  
Wenxiu Que ◽  
Ting Zhou ◽  
Jinyou Shao ◽  
Lingbing Kong
Keyword(s):  
Crystal Structure ◽  
Energy Transfer ◽  
Emission Intensity ◽  
Emission Band ◽  
Emission Spectra ◽  
Excitation Band ◽  
Size Mismatch ◽  
White Leds ◽  
Orange Region ◽  
Potential Applications

In this study, Gd[Formula: see text] and Bi[Formula: see text] ions act to redshift the emission band to orange region, and to enhance significantly the maximum emission of YAG: Ce[Formula: see text]. On account that size mismatch between the host and the doped Gd[Formula: see text] ion, the crystal structure turns soft, and the emission spectra are not tuned from 540 to 570[Formula: see text]nm but decreased the emission intensity. Accordingly, an effective way to increase emission intensity is to introduce Bi[Formula: see text] ion into the YAG: Ce[Formula: see text], Gd[Formula: see text] phosphors. Experimental results show partial overlapping between the emission band of Bi[Formula: see text] ion and the excitation band of Ce[Formula: see text] ion, indicating that the energy transfer from Bi[Formula: see text] to Ce[Formula: see text] ions exists in the (Y[Formula: see text]Ce[Formula: see text]Gd)Al5O[Formula: see text]: Bi[Formula: see text] phosphor. Bi[Formula: see text] ion can serve as the activator to provide energy for Ce[Formula: see text] ion via cross relaxation phenomenon. Therefore, the (Y[Formula: see text]Ce[Formula: see text]Gd)Al5O[Formula: see text]: Bi[Formula: see text] phosphor could have potential applications in warm white LEDs.

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
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