Neodymium and ytterbium co-doped quartz laser glass and preparation method thereof

Abstract

The invention discloses neodymium and ytterbium co-doped quartz laser glass and a preparation method thereof. The glass comprises, in molar percentage, 89.5-94.75% of SiO2, 2.5-5% of Al2O3, 2.5-5% of P2O5, 0.2-0.4% of Nd2O3 and 0.05-0.1% of Yb2O3. The preparation method includes the steps: placing porous loose powder of silicon dioxide prepared by external vapor deposition process into solution of ytterbium chloride, neodymium chloride, aluminum chloride and phosphoric acid; uniformly co-doped neodymium, ytterbium, aluminum and phosphorus; drying and removing hydroxyl, and performing ball-milling to obtain powder with uniform particle sizes; performing high-temperature sintering vitrification to obtain the neodymium and ytterbium co-doped quartz laser glass. Experiments show that the neodymium and ytterbium co-doped quartz laser glass has low expansion coefficient and ultra-wide fluorescent emission in 1 micrometer wave band. The glass can be used for high-repetition frequency and heat shock resistance laser glass and is applicable to ultra-short and ultra-strong laser glass.

Description

technical field [0001] The invention relates to the field of laser glass, in particular to a neodymium-ytterbium co-doped quartz laser glass and a preparation method thereof. Background technique [0002] The laser inertial confinement fusion (ICF) technology based on super-powerful laser has very important strategic significance in solving the problem of human clean energy and ensuring national security. The United States proposed the Laser Inertial Fusion Energy (LIFE) program, and began to devote itself to the research of high-power repetition-frequency lasers for future laser fusion energy generation. Once fusion power generation is successful, it is expected to provide long-term and reliable power supply for large military facilities such as aircraft carriers and space stations. The new basic requirements for laser gain materials used in controllable fusion laser systems are: high power and high repetition rate output with good thermodynamic properties. Existing laser...

AI Technical Summary

Problems solved by technology

[0006] Aiming at the shortcomings of the existing Nd-doped laser glass in the application of ultra-short and ultra-intensive lasers, the invention provides a ytterbium-Nd co-doped quartz laser glass and a preparation method thereof

Images