Nd:Doped Phosphate Glass

Nd Doped Phosphate Glass have been widely used in high average power laser solid state lasers, laser material processing, range finder and other industrial strial and scientific applications.

LLG mainly offers two types of Nd3+ doped phosphate glasses-N21 and N31. LLG Nd3+ phosphate glasses are guaranteed in optical qualities such as homogeneity, striation, stress birefringence, Pt inclusions etc. The different n eodymium doping phosphate glass are ready for your quest. We have stocked 0.7%, 3.0%, and 4.0% doped N31 and N21.

Laser Properties	N21	N31
Nd2O3 (wt%)	2.2	2.2
Nd3+ conc. (1020ions/cm³)	2.68	2.26
Cross section for stimulated emission (10^-20 cm²)	3.40±0.3	4.0±0.3
Life time	330	340±10
Fluorescence half-line width at 290^。K(A)	240	201
Center lasing wavelength (nm)	1053	1053

Thermal Properties	N21	N31
Transformation temp. (^。C)	500	430
Softening temp. (^。C)	530	475
Coeff.of linear thermal expansion (10^-6/^。C) (100 ～Tg ^。C)	12	122.7
Thermal conductivity (250C) (10-3w/cm ^。C)	5.53	5.58
Specific heat (250C) (J/cm³^。C)	0.75	0.75

Optical Properties	N21	N31
Non-linear refractive index coeff.n2(x10^-13e.s.u)	1.3±0.1	1.1±0.1
n (1053nm)	1.5652	1.1±0.1
n_d	1.5758	1.528
n_F	1.5731	1.5413
n_c	1.582	1.5332
Abbe value	65.3	66.2
dn/dT (10^-6/^{^。}C) (20 ～ 100 ^。C)	-4.2	-4.3
Coeff.of linear thermal expansion (10^-6/^。C) (20～100 ^。C)	11	10.7
Thermal coeff.of optical path length (10^-6/ ^。C) (20～100 ^。C)	1.9	1.4

Chemical Properties	N21	N31
Dw (H2O 100 ^。C 1hr) (wt.Loss%)	0.06	0.98
DA (HNO3pH2.2 100 ^。C 1hr) (wt.loss%)	0.3	0.4

Other Properties	N21	N31
Density (g/cm³)	3.4	2.83
Young's modulus (Kgf/mm²)	5647	5270
Posson's ratio	0.27	0.27
Knoop hardness (Kg/cm²)	650	630

Er: Doped Phosphate Glass

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