Neodymium-doped low germanium-aluminum-gallium salt laser glass and preparation method thereof

Abstract

The invention discloses neodymium-doped low germanium-aluminum-gallium salt laser glass. The laser glass comprises the components according to molar ratio: 43-61 mol% of CaO, 8-38 mol% of Al2O3, 1-30 mol% of Ga2O3, 1-20 mol% of GeO2, 1-20 mol% of BaO, 1-10 mol% of MgO, 1-10 mol% of ZnO, 1-5 mol% of Na2O and 0.1-2 mol% of Nd2O3; and a preparation method of the neodymium-doped low germanium-aluminum-gallium salt laser glass is also provided. The glass has a large adjustable range of components, is low in phonon energy, and high in glass transition temperature; the characteristic of broadband transmission in the range of 1.06 microns by doping Nd<3+> can be realized; and therefore, the neodymium-doped low germanium-aluminum-gallium salt laser glass is high-quality ultra-broadband laser glass, so that the glass can be separately used as a gain material to realize the output of femtosecond laser and also can be connected in series with phosphate neodymium glass to form a mixed type neodymium glass laser device, and the laser output with ultrahigh power and ultra-short pulse can be produced.

Description

technical field [0001] The invention belongs to the field of laser neodymium glass preparation, and in particular relates to a wide emission band neodymium-doped low-germanium aluminum gallate laser glass component and a preparation method thereof. technical background [0002] Since the advent of laser technology, ultra-high power laser has been one of the main development directions of laser technology. The way to achieve ultra-high power laser is to increase laser energy and shorten pulse width. Among them, through the mode-locking technology, the pulse duration of the laser can be compressed to the femtosecond level, which greatly improves the pulse laser power. According to Fourier's theorem, the relationship between the laser pulse width and the emission bandwidth of the gain medium is approximately: bandwidth × pulse duration ≥ 0.44. [0003] However, commercial neodymium glass widely used in the market (such as phosphate matrix N31 neodymium glass) has a narrow ban...

AI Technical Summary

Problems solved by technology

However, although the emission bandwidth of the neodymium glass protected by the above patent is much higher than that of commercial phosphate neodymium glass, due to the narrow formation area of ​​neodymium-doped aluminate glass, the tendency of crystallization is large, and the melting temperature is high (>1650°C). It is difficult to prepare large-scale

Images