Physical and Spectroscopic Properties of Yb3+-Doped Fluorophosphate Laser Glasses

Table 2

Physical properties of Yb³⁺-doped fluorophosphate glasses.

	A0	A1	A2	A3	A4	B1	B2	B3	B4
Refractive index nD	1.556	1.551	1.548	1.543	1.540	1.509	1.510	1.510	1.510
Abbe number ×	62.23	66.86	67.90	67.32	64.32	63.07	62.72	64.20	63.94
Nonlinear refractive index 𝜈	1.36	1.20	1.16	1.15	1.23	1.15	1.16	1.12	1.13
Microhardness (GPa)	3.68	3.75	3.89	3.95	4.10	4.40	4.16	4.20	4.11
Thermal expansion coefficient 𝑛2(×10^−13esu)	105.92	91.41	82.61	78.86	75.24	71.98	89.18	63.71	88.14