Experimental and theoretical study of magnetic field induced photoluminescence enhancement in Er³⁺:YVO₄ crystals

Abstract

Experimental and theoretical investigations of resonant absorption induced photoluminescence (PL) enhancement in Er3+:YVO4 crystals with different erbium contents are performed under pulsed high magnetic field. The effects of temperature, excitation power intensity and sample facet direction on the PL enhancement of Er3+:YVO4 crystals are examined. Crystal field theory is used to analyze the PL enhancement behavior, and the calculations agree well with the experimental results. This achievement is important for understanding the magnetic field induced PL enhancement of Er3+:YVO4 crystal, which has potential applications in magneto-optical bifunctional materials and devices.

Mechanism of magnetic field-modulated luminescence from lanthanide ions in inorganic crystal: a review

“…The luminescence intensity would be largely changed once the absorption efficiency is modulated by magnetic field. Han et al developed a resonance excitation method for accurate calibration of pulsed magnetic field and observed the similar behaviors for absorption and normalized integral luminescence intensity with the application of magnetic field [65][66][67].…”

“…Then, magnetic field that enhanced or suppressed the luminescence intensity is discovered accompanying with the magnetic-optical hysteresis. According to the magnetic field-modulated factors, we divided the microscopic mechanism into Zeeman effect [52][53][54][55][56], cross-relaxation [57], Boltzmann population and site symmetry of the crystal structure [58][59][60][61][62][63][64], absorption [65][66][67], quantum confinement effect [68], and magneticoptical hysteresis [69].…”