Nd:Glass
High-power laser glass---Nd:glass(N31)
Nd doped phosphate glass have been widely used in high average power laser solid state lasers，laser material processing, range finder and other industrial and scientific applications。
Optoaxis mainly offers Nd 3+ doped phosphate glasses (N31). Optoaxis Nd 3+ phosphate glasses are guaranteed in optical qualities such as homogeneity, striation, stress birefringence, Pt inclusions etc. The different neodymium doping phosphate glasses are ready for your quest. We have stocked 0.7%, 3.0%, and 4.0% doped N31
Table Properties of Nd 3+ -doped phosphate glass (N31 _
| LASER PROPERTIES | |
| Nd 2 O 3 (wt%) | 2.2 |
| Nd 3+ conc. (10 20 ions/cm 3 ) | 2.26 |
| Cross section for stimulated emission(10 -20 cm 2 ) | 4.0±0.3 |
| lift time (usec) | 340±10 |
| Fluorescence half-line width at 290ºK(Å) | 201 |
| Center lasing wavelength (nm) | 1059 |
| OPTICAL PROERTIES | |
| Non-linear refractive index coeff.n 2 (×10 －13 e.s.u) | 1.1±0.1 |
| n（1053nm） | 1.5280 |
| n d | 1.5357 |
| n F | 1.5413 |
| n c | 1.5332 |
| Abbe value | 66.2 |
| dn/dT (10 -6 /ºC) （20~100ºC） | -4.3 |
| Coeff.of linear thermal expansion (10 -6 /ºC)（20~100ºC） | 10.7 |
| Thermal coeff. (10 -6 /ºC) （20~100ºC） | 1.4 |
| THERMAL PROPERTIES | |
| Transformation temp.(ºC) | 430 |
| Softening temp.(ºC) | 475 |
| Coeff.of linear thermal expansion (10 -6 /ºC) (100~TgºC) | 12.7 |
| Thermal conductivity (25ºC) (10 -3 W/cmºC) | 5.58 |
| Specific heat ( 25ºC) (J/cm 3 ºC) | 0.75 |
| CHEMICAL ROPERTIES | |
| D w (H2O 100ºC 1hr)(wt. Loss%) | 0.09 |
| D A (HNO 3 pH2.2 100ºC 1hr) (wt. loss%) | 0.40 |
| OTEHER ROPERTIES | |
| Density(g/cm 3 ) | 2.83 |
| Young's modulus (kgf/mm 2 ) | 5270 |
| Posson's ratio | 0.27 |
| Knoop hardness (kg/cm 2 ) | 630 |