Near-IR Emission Enhancement of K2LuF5: Yb3+/Er3+via the Cross-Relaxation Processes with the Assistance of Ce3+Ions

2016 ◽  
Vol 5 (12) ◽  
pp. R199-R202 ◽  
Author(s):  
Yushuang Qi ◽  
Wenjuan Bian ◽  
Xue Yu ◽  
Xuhui Xu ◽  
Jianbei Qiu
Keyword(s):  
Cross Relaxation ◽  
Relaxation Processes ◽  
Near Ir ◽  
Emission Enhancement ◽  
The Cross ◽  
Ir Emission

MANIFESTATION IN IR-LUMINESCENCE OF THE CROSS RELAXATION PROCESSES BETWEEN NV CENTERS IN WEAK MAGNETIC FIELDS

2021 ◽  
Vol 88 (6) ◽  
pp. 858-871
Author(s):  
D. S. Filimonenko ◽  
V. M. Yasinskii ◽  
A. P. Nizovtsev ◽  
S. Ya. Kilin ◽  
F. Jelezko
Keyword(s):  
Magnetic Field ◽  
Magnetic Fields ◽  
Local Maximum ◽  
Cross Relaxation ◽  
Relaxation Processes ◽  
Pronounced Increase ◽  
Weak Magnetic Fields ◽  
Nv Center ◽  
The Cross ◽  
Nv Centers

We present a combined experimental and theoretical study of the effect of magnetic field on the luminescence from an ensemble of NV centers in diamond. It was found that the intensity of infrared luminescence associated with transitions between singlet levels of NV centers shows a pronounced increase of a near-zero magnetic field. The influence of the power and polarization of laser radiation on the amplitude and shape of the revealed local maximum in IR-luminescence of NV centers is investigated. An eight-level photophysical model of an NV center in the presence of an arbitrarily directed magnetic field has been constructed and on its basis the calculation has been performed of the luminescence intensity emitted by an ensemble of NV center, both in the visible and infrared regions of the spectrum. It is shown that the phenomenological allowance for the cross-relaxation of NV centers between each other and with other paramagnetic centers in a diamond within the framework of this model allows describing the experimentally observed fluorescence features of an ensemble of NV centers in the presence of weak magnetic fields.

scholarly journals Origin of visible and near IR upconversion in Yb3+-Tm3+-Er3+ doped BaMgF4 phosphor through energy transfer and cross-relaxation processes

2020 ◽  
Vol 99 ◽  
pp. 109511
Author(s):  
Bhushan P. Kore ◽  
Ashwini Kumar ◽  
Robin E. Kroon ◽  
Jacobus J. Terblans ◽  
Hendrik C. Swart
Keyword(s):  
Energy Transfer ◽  
Cross Relaxation ◽  
Relaxation Processes ◽  
Near Ir

ErIII-Cored Complexes Based on Dendritic PtII–Porphyrin Ligands: Synthesis, Near-IR Emission Enhancement, and Photophysical Studies

2007 ◽  
Vol 17 (3) ◽  
pp. 413-424 ◽  
Author(s):  
J. B. Oh ◽  
M.-K. Nah ◽  
Y. H. Kim ◽  
M. S. Kang ◽  
J.-W. Ka ◽  
...  
Keyword(s):  
Near Ir ◽  
Emission Enhancement ◽  
Photophysical Studies ◽  
Ir Emission

Mid-infrared emissions from Er3+ in Ga2S3–GeS2–Sb2S3 glasses

2010 ◽  
Vol 25 (11) ◽  
pp. 2111-2119 ◽  
Author(s):  
Manabu Ichikawa ◽  
Yoichi Ishikawa ◽  
Takashi Wakasugi ◽  
Kohei Kadono
Keyword(s):  
Initial Level ◽  
Glass Network ◽  
Structural Similarity ◽  
Infrared Region ◽  
Cross Relaxation ◽  
Relaxation Processes ◽  
Mid Infrared ◽  
The Cross ◽  
Infrared Emissions ◽  
Similarity And Difference

Emission properties of Er3+ in Ga2S3–GeS2–Sb2S3 glasses at the mid-infrared region were investigated from the viewpoint of their dependence on the concentration of the active ion and the glass composition. In the Judd–Ofelt analysis, no variation in omega parameters were observed when GeS2 was replaced by Ga2S3, while Ω2 increased as Sb2S3 was replaced by Ga2S3. This is due to the structural similarity and difference between the glass network units, GaS4 and GeS4 tetrahedra, and SbS3 pyramid. Clear mid-infrared emissions were observed at 2750 and 4300 nm assigned to the 4I11/2 → 4I13/2 and 4I9/2 → 4I11/2 transitions, respectively. The lifetime of the initial level of the 4.3 μm emission, 4I9/2, rapidly decreased with the Er3+ concentration because of the cross relaxation of this level, which can take place even at considerably low Er3+ concentration. The cross-relaxation processes were suppressed by the increase in the content of Ga2S3 because the solubility of Er3+ ions in the glasses increases with the Ga2S3 content.

Cholesterol Hydroperoxides Generate Singlet Molecular Oxygen [O2(1Δg)]: Near-IR Emission,18O-Labeled Hydroperoxides, and Mass Spectrometry

2011 ◽  
Vol 24 (6) ◽  
pp. 887-895 ◽  
Author(s):  
Miriam Uemi ◽  
Graziella E. Ronsein ◽  
Fernanda M. Prado ◽  
Flávia D. Motta ◽  
Sayuri Miyamoto ◽  
...  
Keyword(s):  
Mass Spectrometry ◽  
Molecular Oxygen ◽  
Singlet Molecular Oxygen ◽  
Near Ir ◽  
Ir Emission

Near-IR emission from holmium–ytterbium co-doped alkali bismuth gallate and fluorophosphate fiber glass preforms

2009 ◽  
Vol 473 (1-2) ◽  
pp. 500-504 ◽  
Author(s):  
M. Alejandrina Martínez Gámez ◽  
A.V. Kir’yanov ◽  
J.L. Lucio M. ◽  
C. Wiechers ◽  
G.A. Kumar
Keyword(s):  
Fiber Glass ◽  
Near Ir ◽  
Ir Emission ◽  
Co Doped

Near-IR Emission and upconversion luminescent properties of Tb3+/Yb3+ Co-doped HfO2/SiO2 nanoparticles

2021 ◽  
Author(s):  
Vicente Vargas ◽  
Anastasiya Sedova ◽  
Jesús Uriel Balderas ◽  
S. Carmona-Tellez ◽  
Iván Merlin ◽  
...  
Keyword(s):  
Luminescent Properties ◽  
Sio2 Nanoparticles ◽  
Near Ir ◽  
Ir Emission ◽  
Co Doped
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