In this paper, we put emphasis on the analysis the mechanism of the photon induced frequency conversion β BaB 2O 4 crystal inside a borate glass using femtosecond laser. Because of the nature of femtosecond laser...In this paper, we put emphasis on the analysis the mechanism of the photon induced frequency conversion β BaB 2O 4 crystal inside a borate glass using femtosecond laser. Because of the nature of femtosecond laser's ultra short pulse duration and high energy density, in essence the laser glass interaction mechanism is changed. Based on multiphoton ionization, collisional ionization and the network depolymerization in the borate glass, production of the plasma drives the microstructure rearrangement near the laser beam focusing area. From the structure of glass and crystal analysis, we conclude that the complicated borate groups containing BO 3 and BO 4 units inside the glass are converted into(B 3O 6) -3 anion rings.展开更多
文摘In this paper, we put emphasis on the analysis the mechanism of the photon induced frequency conversion β BaB 2O 4 crystal inside a borate glass using femtosecond laser. Because of the nature of femtosecond laser's ultra short pulse duration and high energy density, in essence the laser glass interaction mechanism is changed. Based on multiphoton ionization, collisional ionization and the network depolymerization in the borate glass, production of the plasma drives the microstructure rearrangement near the laser beam focusing area. From the structure of glass and crystal analysis, we conclude that the complicated borate groups containing BO 3 and BO 4 units inside the glass are converted into(B 3O 6) -3 anion rings.
