NAP Nd3+-doped phosphate glasses for high average power applications
Classification:
phosphate glasses are two types of new laser glass with high thermal shock resistance properties, which have higher thermal conductivity, lower coefficient of thermal expansion and modest emission cross section.
Cotnact：
Details Introduction
NAP2 and NAP4 Nd3+ : phosphate glasses are two types of new laser glass with high thermal shock resistance properties, which have higher thermal conductivity, lower coefficient of thermal expansion and modest emission cross section. The NAP2 and NAP4 glass can be used as active materials in laser systems with high repetition rates and high energy, which have broad applications in laser ranger, laser peening and pump laser for OPCPA systems. The glass can be customized with the maximum size of 400mm×400mm×70mm.
Parameter
| NAP2 | NAP4 | |
|
Laser Specifications Cross section for stimulated emission (10-20c㎡) |
3.6±0.1 |
3.1±0.1 |
| Lifetime at 1053nm (usec) |
≥360 (Nd2O3 : 0.5wt%) ≥350 (Nd2O3:1.0wt%) ≥330 (Nd2O3:2.0wt%) ≥310 (Nd2O3 : 3.0wt%) |
≥370 (Nd2O3 : 0.5wt%) ≥360 (Nd2O3 : 1.0wt%) ≥330 (Nd2O3:2.0wt%) ≥310 (Nd2O3 : 3.0wt%) |
|
Effective bandwidth(nm) Fluorescence peak wavelength(nm) |
25.4 1052 |
28.5 1052 |
| Absorption coefficient (cm-1) |
≤0.0015(1053nm) ≤0.25 (400nm) ≤1.5(3333nm) |
≤0.002 +3nm) ≤0.3(400nm) ≤1.5(3333nm) |
| Optical Specifications | ||
|
Non-linear refractive indexff.n2(x1013e.s.u) Refractive index (1053nm) Abbe value dn/dT (10-6/℃) (20~100℃)
|
≤1.25 1.537±0.003 67 -0.9
|
≤1.10 1.515±0.005 67 1.9
|
| Thermal Specifications | ||
|
Transformation temp.(℃) Softening temp.(℃) Coeff.of linear thermal expansion (10-7/K) (50~100℃) Coeff.oflinear thermal expansion ((10-7/K) (30~300℃) Thermal coeff. of optical path length ((10-7/K) (50~100℃) Thermal conductivity (25℃) (W/m K) Specific heat (25℃) (J/g K) |
500 550 87 95 3.8 0.76 0.757 |
545 600 63 71 5.0 0.88 0.775 |
| Chemical Specifications | ||
| Dw(H2O 98℃)(mg/(c㎡/day)) | 0.003 | 0.002 |
| Other Specifications | ||
|
Density(g/cm3) Young' s modulus (G Pa) Posson' s ratio Knoop hardness(kg/cm2) Fracture toughness (MPa·m1/2) |
2.84 58 0.25 382 0.68 |
2.58 67 0.25 549 0.74 |
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NAP Nd3+-doped phosphate glasses for high average power applications
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