Work

Femtosecond laser melting upconversion nanoparticles for sub-micrometer optical patterning

Year: 2025

Type: article

Abstract: This study introduces a method for precise modulation of upconversion luminescence (UCL) in UCNP thin films via laser-induced melting, enabling high-resolution, sub-micrometer optical patterning. By employing a 460-nm femtosecond (fs) laser, localized melting disrupts the UCNP crystalline lattice, facilitating tunable UCL quenching with efficiencies exceeding 90%. This approach relies solely on the intrinsic properties of UCNPs, avoiding the need for composite materials or complex multi-stimulus systems. The technique provides precise control of UCL modulation, making it suitable for sub-micrometer-scale optical patterning.

Source: Optics Express

DOI: 10.1364/oe.557532

Authors: Weizhao Gu, Simone Lamon, Min Gu, Qiming Zhang

Language: English

Topic: Luminescence Properties of Advanced Materials

Subfield: Materials Chemistry

Field: Materials Science

Domain: Physical Sciences

Open Access status: gold

Estimated APC paid: $2,270

Funders: National Natural Science Foundation of China, China Postdoctoral Science Foundation, National Key Research and Development Program of China

Awards: G1036435167, G4473236962, G5799797692, G6222871252, G8009331649