Er:glass

Erbium and ytterbium co-doped phosphate glass has a broad application because of the excellent properties. Mostly, it is the best glass material for 1.54um laser due to its eye-safe wavelength of 1540 nm and high transmission through atmosphere. The main application for Er:glass laser is for laser range finder and LIDAR.

We can also produce erbium laser glass with various ions doping according to your requirement. We have three kinds of Erbium-doped glasses for different use, EAT14, Cr14.

EAT14: Yb 3+ , Er 3+ co-doped phosphate glass, which is applicable in high repetition rate (1-6Hz) laser diode pumped 1535nm laser. High Yb 3+ doping can be realized to this EAT14 glass.

Cr14: is a type of Erbium glass with Yb 3+, Cr:3+, Er 3+ doped phosphate glass for xenon lamp pumping laser device and laser range-finder application.

Properties of Erbium Laser Glass

PROPERTIES	Cr14	EAT14
Lasing Properties
Cross section for stimulated emission (10 -20 cm 2 )	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 ）	1.530	1.524
n d	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. (ºC)	493	605
Thermal conductivity (25ºC) (W/m. K)	0.70	0.70
Coeff. of linear thermal expansion (10 -7 /ºC) (100~300ºC)	127	95
Other Properties
Density (g/cm 3 )	3.10	3.06
Chemical durability (weigh loss rate at 100ºC distilled water) (μg/hr.cm 2 )	103	52

Standard Proucts

Glass Type	Dopping Concentration	Dimension	Coating	Pump Type
EAT14	0.13%Er, 21%Yb	Dia2.2 x 32mm 3x1.5x32mm	AR/AR@ 1540nm	LD, Lamp
	0.26%Er, 21%Yb	3x1.5x22mm 3x1.5x20mm	AR/AR@ 1540nm	LD, Lamp
	0.5%Er, 21%Yb	3x1.5x10mm	HR1540&HT940	LD
	1%Er, 21%Yb	3x1.5x5mm	HR1540&HT940	LD
Cr14	0.13%Er, 0.05%Cr, 20%Yb	Dia3x30mm	AR/AR@ 1540nm	Lamp