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Nd: Glass

Nd doped phosphate glassNd 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(×1013e.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

 D(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.