LASER PROPERTIES 

Cross section for stimulated emission (10 -20 cm²)

0.8

0.8

Fluorescent lifetime (ms)

7.7-8.0

7.7-8.0

Center lasing wavelength (nm)

1535

1535

OPTICAL PROPERTIES

n (1535nm)

1.53

1.524

nd

1.539

1.532

Abbe value

64

66

dn/dT (10 -6 /ºC) (20~100ºC)

-5.2

-1.72

Coeff. of linear thermal expansion (10 -7 /ºC)(20~100ºC)

103

87

Thermal coeff. of optical path length (10 -7 /ºC) (20~100ºC)

3.6

29

THERMAL PROPERTIES

Transformation temp. (ºC)

455

556

Softening temp. (℃)

493

605

Thermal conductivity (25℃) (W/m. K)

0.7

0.7

Coeff. of linear thermal expansion (10 -7 /℃) (100~300℃)

127

95

OTHER PROPERTIES

Density (g/cm³ )

3.1

3.06

Chemical durability (weigh loss rate at 100ºC Distilled water) (μg/hr.cm² )

103

52