Laser Properties of Sapphire Crystals

Laser Properties of Sapphire Crystals

Sapphire acquires lasing properties after the introduction of active additives. It should be noted that sapphire can be used as a lasing medium only in the isostructural substitution of Al. The catalyst distribution coefficient, Kd, depends on the thermodynamic parameters and acoustic field conditions of the matrix catalytic system (Table 2.14). It is difficult to calculate Kd taking into account thermodynamic and kinetic factors. This value can be estimated within the framework of isomorphic energy theory with the following relation [93]:

InKd =△Hm/Rg(Tc-1 – Tm-1) – Qs/Rg(1.2Tc-1 - ti) (2.9)

Here △Hm is the heat of fusion, Rg is the gas constant, Tc is the crystallization temperature of the mixture, Tm is the melting point of the catalyst, ti is an empirical constant, and Qs is the mixing energy of the solid solution. The introduction of large-sized cations (Sc, Ln) into sapphire greatly Decrease the distribution coefficient.

Kunshan Shuojing Optoelectronics Technology Co., Ltd. is involved in a wide range of new materials, and has complete preparation methods and means for functional ceramics and sapphire crystals, scintillation crystals, and laser crystals, forming optically transparent ceramics, sapphire optical windows, scintillation crystals, lasers and nonlinear crystals Master's four series of high-tech products