Chen Xiao-Bo

Non-resonant upconversion energy transfer of crystal ErP5O14

This paper reports the upconversion luminescence phenomenon of crystal ErP5O14 in ultraviolet to blue-green wave range induced by red DCM dye laser. The upconversion passage of each upconversion fluorescence is confirmed. It is found that the upconversion mechanism is mainly non-resonant upconversion energy transfers between rare earth ions when laser wavelength is near 650 nm. It is very interesting that the non-resonant upconversion energy transfer is achieved directly through a kind of coupling state of rare earth ion cluster and the ions do not exchange their phonon energy with crystal lattice.

Multi-photon Up-conversion Luminescence of ErP5O14 Noncrystalline

In this paper we report the observation of multi-photon up-conversion luminescence phenomenon of ErP5O14 noncrystalline induced by pulse DCM dye laser and clarify that the mechanism of up-conversion is the step by step absorption of single Er3+ ion.

Blue-green up-conversion luminescence of noncrystalline HoP5O14 induced by pulse DCM dye laser

This paper reports the up-conversion luminescence phenomenon in blue-green wave-range of noncrystalline HoP5O14 induced by pulse DCM dye laser and gives some simple analyses.

The ultraviolet up-conversion luminescence of noncrystalline ErP5O14

This paper reports the observation of the ultraviolet up-conversion luminescence phenomenon of noncrystalline ErP5O14 excited by pulse 532 nm laser. The up-conversion mechanism is explained as follows, namely, when noncrystalline ErP5O14 is excited 532 nm laser, the excited population is mainly deposited in 4S3/2 level because of the strong nonradiative relaxation between 2H11/2 and 4S3/2 level, then up-converted to (2H2G)9/2 level by energy transfer between Er3+ ions, this produces the ultraviolet luminescence.

Light Amplification in Non-photorefractive Doped Polymer Film at Red Light Wavelength

Experimental studies of light amplification with dynamic multiwave gratings recorded in an acceptor-donor-substituted azobenzene-doped poly(methyl methacrylate) thin film by multiwave mixing are reported. The amplification gain was measured to be as high as 6.7, and the operation at red light wavelength decreases the absorption losses.

The 450 nm Up-Conversion Fluorescence of Crystalline TmP5O14

This paper reports the 450 nm up-conversion fluorescence of the crystalline TmP5O14 at room temperature induced by pulsed DCM dye laser. It is found that the up-conversion mechanism is the excited state absorption.