Nd₂O₃

wt.%

4.10

Nd³⁺ concentration

10²⁰ions/cm^-3

4.15

Stimulated emission cross section

δp

10^-20cm²

3.6

Fluorescence lifetime

τ

μsec

310

FWHM(full width half   maximum)

of fluorescence line

Δλ

nm

21.8

Optical Properties

Nonlinear refractive index

n₂

10^-13e.s.u

1.12

Refractive index at 1053nm

n(1053)

1.52005

Refractive index at 632.8nm

n(632.8)

1.52793

Refractive index at 587.6nm

n_d

1.52962

Refractive index at 486.1nm

n_F

1.53515

Refractive index at 656.3nm

n_C

1.52718

Abbe number

υ_d

66.5

Brewster angle

56°40′

TCRI (temperature coefficient of refractive index)（20～40℃）

dn/dt

10^-6/℃

-5.3

CLTE (coefficient of linear thermal expansion)（20～40℃）

10^-6/℃

11.2

Temperature coefficient of optical path （20～40℃）

ds/dt

10^-6/℃

+0.6

Thermal Properties

Transformation temperature

Tg

℃

485

Softening temperature

Ts

℃

520

CLTE (coefficient of linear thermal expansion) (100～300℃）

α

10^-7/℃

127

Thermal conductivity （25℃）

χ

Kcal/m·h·℃

0.50

Specific heat （25℃）

C_p

cal/g·℃

018

Chemical properties

Durability of water（H₂O，100℃，1Hr）

D_w

wt. weight loss%

0.13

Durability of acid（HNO₃，PH2.2,100℃，1Hr）

D_A

wt. weight loss%

0.47

Other properties

Density

ρ

g/cm³

2.83

Young modulus

E

kgf/mm²

5110

Shear modulus

G

kgf/mm²

2030

Poisson ratio

μ

0.258

Knoop hardness （100gf，15sec）

H_k

kgf/mm²

350

Piezo-optic coefficient

B

nm/cm/kgf/mm²

1.93