title: New method for measuring time-resolved spectra of lanthanide emission using square-wave excitation.
abstract: A method using modulated continuous wave (CW) visible laser to measure time-resolved fluorescence spectra of trivalent rare-earth ions has been developed. Electro-optic modulator was used to modulate the CW pumping laser with a rise time of 2 μs. CW Nd(3+) lasers were used as examples to present the method. Upconversion dynamic process of Ho(3+) was studied utilizing a 532 nm CW laser. Quantum cutting dynamic process from Tb(3+) to Yb(3+) was analyzed by a 473 nm CW laser. This method can be applied to any CW laser such as He-Ne laser, Ar(+) laser, Kr(+) laser, Ti:sapphire laser, etc.
authors.affiliation: Condensed Matter Science and Technology Institute, Harbin Institute of Technology, Harbin 150080, China.
authors.forename: Feng
authors.initials: F
authors.lastname: Qin
authors.forename: Hua
authors.initials: H
authors.lastname: Zhao
authors.forename: Qianqian
authors.initials: Q
authors.lastname: Duan
authors.forename: Wei
authors.initials: W
authors.lastname: Cai
authors.forename: Zhiguo
authors.initials: Z
authors.lastname: Zhang
authors.forename: Wenwu
authors.initials: W
authors.lastname: Cao