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Nd doped glasses have been widely used in high average power solid state lasers, laser material processing, range finder and other industrial and scientific applications.
Bluebean Optical's Nd3+ phosphate glasses are guaranteed in optical qualities such as homogeneity, striation, stress birefringence, Pt inclusions etc. We mainly offers the following types of Nd3+ doped phosphate glass－N21, N31, NAP2, and NAP4 type glass.
- N21 type Nd doped laser glass: this kind of glass exhibits the moderate cross section for stimulated emission and the excellent chemical durability.
- N31 type Nd doped laser glass: a new Nd3+ doped phosphate laser glass, it exhibits the nearly same qualification with HOYA LHG8.
- NAP type glass: has low linear thermal expansion coefficient, large thermal conductivity and suitable cross section for stimulated emission. It is high average power Nd3+-doped phosphate laser glass, and can works for high repetition laser application.
* We have 0.5%, 1.2%, 2.2%, 3.0%, 3.5% Nd3+ phosphate glasses in stock.
Nd doped phosphate glass properties:
|
PROPERTIES |
N21 |
N31 |
NAP2 |
NAP4 |
|
LASER PROPERTIES |
|
|
|
|
|
Nd2O3 (wt%) |
2.2 |
2.2 |
1.0 |
1.0 |
|
Nd3+ conc. (1020ions/cm3) |
2.68 |
2.26 |
3.70 |
3.20 |
|
Cross section for stimulated emission(10-20cm2) |
3.4±0.3 |
4.0±0.3 |
|
|
|
Fluorescence life time (usec) |
330 |
340 |
360 |
380 |
|
Fluorescence half-line width at 290ºK(Å) |
240 |
201 |
250 |
270 |
|
Center lasing wavelength (nm) |
1053 |
1053 |
1054 |
1052 |
|
OPTICAL PROPERTIES |
|
|
|
|
|
Non-linear refractive index coeff.n2(×10－13e.s.u) |
1.3 |
1.1 |
1.22 |
1.1 |
|
n (1053nm) |
1.5652 |
1.528 |
1.536 |
1.523 |
|
nd |
1.5758 |
1.5357 |
1.542 |
1.530 |
|
nF |
1.5731 |
1.5413 |
1.548 |
1.536 |
|
nc |
1.582 |
1.5332 |
1.541 |
1.527 |
|
Abbe value |
65.3 |
66.2 |
67 |
66 |
|
dn/dT (10-6/ºC) (20~100ºC) |
-4.2 |
-4.3 |
-8.7 |
1.9 |
|
Coeff.of linear thermal expansion (10-6/ºC) (20~100ºC) |
11 |
10.7 |
8.2 |
6.8 |
|
Thermal coeff. of optical path (10-6/ºC) (20~100ºC) |
1.9 |
1.4 |
3.6 |
5.0 |
|
THERMAL PROPERTIES |
|
|
|
|
|
Transformation temp.(ºC) |
500 |
430 |
478 |
545 |
|
Softening temp.(ºC) |
530 |
475 |
517 |
620 |
|
Coeff. of linear thermal expansion (10-6/ºC) (100~TgºC) |
12 |
12.7 |
9.6 |
7.5 |
|
Thermal conductivity (25ºC) (10-3W/cmºC) |
5.53 |
5.58 |
7.66 |
8.64 |
|
Specific heat (25ºC) (J/cm3ºC) |
0.75 |
0.75 |
0.757 |
0.753 |
|
CHEMICAL PROPERTIES |
|
|
|
|
|
Dw (H2O 100ºC 1hr)(wt. Loss%) |
0.06 |
0.09 |
0.0137 |
0.0007 |
|
DA (HNO3 pH2.2 100ºC 1hr) (wt. loss%) |
0.3 |
0.4 |
|
|
|
OTEHER PROPERTIES |
|
|
|
|
|
Density(g/cm3) |
3.4 |
2.83 |
2.76 |
2.58 |
|
Young’s modulus (kgf/mm2) |
5640 |
5270 |
|
|
|
Posson’s ratio |
0.27 |
0.27 |
382 |
549 |
|
Knoop hardness (kg/cm2) |
650 |
630 |
|
|
* The different neodymium doping phosphate glasses are available upon your request.