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Title of Journal: Appl Phys B

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Abbravation: Applied Physics B

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Springer-Verlag

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DOI

10.1007/bf01483604

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1432-0649

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Photon avalanche upconversion and pump power studi

Authors: A K Singh K Kumar A C Pandey O Parkash S B Rai D Kumar
Publish Date: 2011/07/29
Volume: 104, Issue: 4, Pages: 1035-
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Abstract

Hexagonal LaF3Er3+/Yb3+ phosphor material has been synthesized by chemical precipitation method to obtain high nearinfrared to green upconversion UC efficiency Its thermal structural and fluorescence properties have been studied UC emission bands have been observed up to 315 nm in UV region The effect of input pump power on the intensities of various emission bands has been studied in detail and photon avalanche UC mechanism has been identified On increasing the excitation power some bands have shown saturation in intensity Also at higher pump intensities two new UC bands were observed and their origin has been discussed The phosphor has also been tested for possible UCbased fingerprint detection

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Other Papers In This Journal:
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  14. Study of the optical bistability in the laser oscillation of Yb:GdVO 4 crystal
  15. Single particle size and fluorescence spectra from emissions of burning materials in a tube furnace to simulate burn pits
  16. Studies on third-order nonlinear optical properties and reverse saturable absorption in polythiophene/poly (methylmethacrylate) composites
  17. Water-based enhancement of the resonant photoacoustic signal from methane–air samples excited at 3.3 μm
  18. Control of the photodissociation of CsCl
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