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    Erbium laser 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 eyesafe wavelength of 1540 nm and high transmission through atmosphere. It¡¯s also suitable for medical applications 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 various ion doping according to your requirement. we have three kinds of Erbium-doped glasses. EP6, WM4,Cr14. 

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EP6

LASER PROPERTIES  
Cross section for stimulated emission(10-20cm2)
Fluorescent lifetime (usec)
Center lasing wavelength(nm)



0.8
9000
1535

OPTICAL PROERTIES
Non-linear refractive index coeff.n2(¡Á10£­13e.s.u)
n£¨1540nm£©
nd
Abbe value
dn/dT (10-6/ºC) £¨20~100ºC£©
Coeff.of linear thermal expansion (10-6/ºC)£¨20~100ºC£©
Thermal coeff. of optical path length (10-6/ºC) £¨20~100ºC£©



1.20
1.532
1.544
65
-4.7
10.0
0.64

THERMAL PROPERTIES
Transformation temp.(ºC)
Softening temp.(ºC)
Coeff.of linear thermal expansion (10-6/ºC) (100~TgºC)


442
470
13.0

OTHER PROPERTIES
Density (g/cm3)
Chemical durability 
(weigh loss rate at 85ºC distilled water)


3.15
70¦Ìg/hr.cm

             

                          WM4: Erbium phosphate glass for ion-exchange purpose

PROPERTIES  

WM4

nd

1.536
Density(g/cm3)

2.83

n

66

Stimulated cross section (pm2)

0.75

Fluorescent lifetime (ms)

8.0

Radiative lifetime (ms)

9.1

FWHM (nm)

45

Tg(¡ãC)

530

Tf(¡ãC)

573

a(25-80¡ãC)  (10-7/K)

82

a(25-300¡ãC)  (10-7/K)

96

Knoop hardness (kg/mm2)

430

dn/dT  (10-7/K)

-30

dS/dT  (10-7/K)

14

Weight loss at 100¡ãC boiling water (mg/cm2.hr)

14.5

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Cr14 glass: Erbium phosphate glass for xenon lamp or laser diode pumping laser device

PROPERTIES  

Cr14

nd

1.5393

Density(g/cm3)

3.10
n at lasing wavelength

1.530

n

64

Stimulated cross section (pm2)

0.8

Fluorescent lifetime (ms)

7.7

Radiative lifetime (ms)

8.8

FWHM (nm)

29

Tg(¡ãC)

455

Tf(¡ãC)

493

a(25-80¡ãC)  (10-7/K)

103

a(25-300¡ãC)  (10-7/K)

127

dn/dT  (10-7/K)

-52

dS/dT  (10-7/K)

3.6

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                            If you need above products, please email to hulili@laserglass.com.cn