Abstract
Blue green light wave section laser has extensive application value in high density data storage, seabed communication, large screen display and checkout and laser medical treatment and so on。The major purpose of this research is exploring the glass material which is suitable in making multi-functional photon parts。By researching the infrared spectra and absorption spectra, upconversion spectra of Yb3+-doped tetraphosphate glass,which provide the foundation for potential application of the upconversion lasers。The research results showed that(1) Following the PbF2 content increasing，the light intensity of upconversion increases and then descends，and achieves the maximum at 10mol%，but the thermostability of glass material decreases monotonous；(2) Following the PbO content increasing,the ratio of upconversion bule light and red light intensity increases,and the thermostability of glass material increases monotonous(3) Following the Pb2O3 content increasing, the energy transfer efficiency descends after increasing first，and achieves the maximum when the ratio of theYb3+ content and the Er3+ content is 5:1，but the light intensity of upconversion increases monotonous，which illuminates that only calculate energy transfer efficiency can’t reflect the magnitude of the light intensity of upconversion。Analysing the mechanism of upconversion，show that both upconversion bule light and red light are absorption courses of pair photon。The research results will provide the important basis of preparing Er3+-doped two layer optical fiber。
