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Sequential three-step three-photon near-infrared quantum splitting in β-NaYF4:Tm3+
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10.1063/1.4714505
/content/aip/journal/apl/100/19/10.1063/1.4714505
http://aip.metastore.ingenta.com/content/aip/journal/apl/100/19/10.1063/1.4714505
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Figures

Image of FIG. 1.
FIG. 1.

NIR PL spectra of NaYF4:Tm3+ and NaYF4:Tm3+, Yb3+, respectively. Solid lines are PL spectra recorded on a R5509-72 PMT, and dotted line represents those which were measured with a PbSe detector. The inset of (a) shows visible PL spectrum of NaYF4:Tm3+ excited at 470 nm.

Image of FIG. 2.
FIG. 2.

PLE spectra of NaYF4:Tm3+ monitored at PL wavelengths of 646, 804, 1165, 1466, and 1800 nm, respectively. Solid PLE spectra are recorded on a R5509-72 PMT, and dotted measured with a PbSe detector.

Image of FIG. 3.
FIG. 3.

Energy-level diagrams presenting the concept of a sequential three-step three-photon NIR QS: (a) for NaYF4:Tm3+ excited by 470 and 798 nm, and (b) for a 976 nm LD pumping Yb3+ to excite Tm3+ through a Stokes ET in NaYF4:Tm3+,Yb3+. (1) the first-step, 1G43H4 at 1165 nm, (2) the second-step, 3H43F4 at 1466 nm, and (3) the third-step, 3F43H6 at 1800 nm. Solid and dotted arrows represent optical transition and NR processes, respectively.

Image of FIG. 4.
FIG. 4.

Time-resolved emission spectra of NaYF4:Tm3+ with delay times 112, 152, 360, 700, 1100, and 1800 μs in the 1100 and 1700 nm wavelength range upon 470 nm pulsed excitation with a μF900 microsecond Xe flashlamp.

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/content/aip/journal/apl/100/19/10.1063/1.4714505
2012-05-10
2014-04-16
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Sequential three-step three-photon near-infrared quantum splitting in β-NaYF4:Tm3+
http://aip.metastore.ingenta.com/content/aip/journal/apl/100/19/10.1063/1.4714505
10.1063/1.4714505
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