Growth, spectroscopy properties, and laser operation of single crystal fiber: Nd 3+ -doped CNGG
Year: 2024
Type: article
Abstract: Nd 3+ -doped calcium niobium gallium garnet single crystal fibers (Nd:CNGG SCFs) with varying Nd 3+ concentrations were successfully grown using the laser-heated pedestal growth (LHPG) method. The study thoroughly examines the fundamental physical structure, optical properties, and laser characteristics of the as-grown Nd:CNGG SCFs. Results indicate that the Nd:CNGG SCF exhibits broader absorption and emission full width at half maximum (FWHM) compared to bulk single crystals. Moreover, pumped by a commercial 808 nm laser diode, continuous-wave laser operation at 1061 nm with a half-height width of 1.86 nm was achieved. The laser output power reached 1.04 W at an absorbed power of 7.46 W, with a slope efficiency of 25.4% relative to the absorbed pump power. These findings suggest that Nd:CNGG SCF holds promise as a practical and potent candidate for laser gain medium, offering significant research potential in the field of lasers.
Source: Optical Materials Express
DOI: 10.1364/ome.533369
Institutions: Université de Lyon, Tongji University
Language: English
Subfield: Electrical and Electronic Engineering
Field: Engineering
Domain: Physical Sciences
Open Access status: gold
Estimated APC paid: $1,843
Awards: G315712129, G5630505189, G8192440854
OpenAlex ID: W4403379347