Er: Doped Phosphate Glass

Erbium and ytterbium co-doped phosphate glass has a broad application because of the excellent properties. Mostly, it is a excellent material for medical application where the need for eye protection may be difficult to manage or diminish or hinder essential visual observation. Recently it is used in optical fiber communication instead of EDFA for its more super plus.

There is a great progress in this field. We can also produce erbium laser glass with varios ion doping according to your requirement. We have three kinds or Erbium-doped glasses. EP6, WM4,Cr14.

Optical Properties	EP6
Non-linear refractive index coeff.n2 (x10^-13 e.s.u)	1.2
n (1540nm)	1.532
nd	1.544
Abbe value	65
dn/dT (10^-6/⁰C) (20～100⁰C)	-4.7
Coeff.of linear thermal expansion (10^{- 6}/⁰C) (20～100⁰C)	10
Thermal coeff.of optical path length (10^-6/⁰C) (20 ～ 100⁰C)	0.64

Laser Properties	EP6
Cross section for stimulated emission (10^-20cm²)	0.8
Fluorescent lifetime (usec)	9000
Center lasing wavelength (nm)	1535

Thermal Properties	EP6
Transformation temp. (⁰C)	442
Softening temp. (⁰C)	470
Coeff.of linear thermal expansion (10^{- 6}/⁰C) (100 ～ Tg⁰C)	13

Other Properties	EP6
Desity (g/cm³)	3.15
Chemical durability (weigh loss rate at 85⁰C distilled water)	70ug/hr.cm

Erbium phosphate glass for xenon lamp or laser diode pumping laser device

Properties	EP6
nd	1.5359
Desity (g/cm³)	3.1
n at lasing wavelength	1.53
V	64
Stimulated cross section (pm²)	0.8
Fluorescent lifetime (ms)	7.7
Radiative lifetime (ms)	8.8
FWHM (nm)	29
Tg (⁰C)	455
Tf (⁰C)	493
a(25-80⁰C) (10^-7/K)	103
a(25-300⁰C) (10^-7/K)	127
dn/dT (10^-7/K)	-52
ds/dT (10^-7/K)	3.6

Ti:Sapphire Nd:Doped Phosphate Glass

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