Er:Glass



Wavelength                  1535nm

Density                        2.9g/cm3

Melting Point                426°C

Perpendicularity            ≤2

Parallelism                   ≤ 5"

Surface Quality             ≥10-5
Flatness                       ≥λ\10


Erbium and ytterbium co-doped phosphate glass has a broad application because of the excellent properties. Mostly, it is the best glass material for 1.54μm laser due to its eye safe 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.


EAT14 is Erbium Glass doped with Er 3+ and Yb 3+ and suited to applications involving high repetition rates (1 - 6 Hz) and being pumped with 1535 nm laser diodes. This glass is available with high levels of Erbium (up to 1.7%).

Cr14 is Erbium Glass doped with Er 3+, Yb 3+ and Cr 3+ and suited to applications involving xenon lamp pumping. This glass is often used in laser range finder (LRF) applications.

Basic Properties

Units

EAT14

CR14

Transformation Temperature

ºC

556

455

Softening Temperature

ºC

605

493

Coeff. of Linear Thermal Expansion (20~100ºC)

10‾⁷/ºC

87

103

Thermal Conductivity (@ 25ºC)

W/m. ºK

0.7

0.7

Chemical Durability (@100ºC weigh loss rate distilled water)   

ug/hr.cm2

52

103

Density  

g/cm2

3.06

3.1

Laser Wavelength Peak

nm

1535

1535

Cross-section for Stimulated Emission

10‾²º cm²

0.8

0.8

Fluorescent Lifetime

ms

7.7-8.0

7.7-8.0

Refractive Index (nD) @ 589 nm

 

1.532

1.539

Refractive Index (n) @ 1535 nm

 

1.524

1.53

dn/dT (20~100ºC)

 10‾⁶/ºC

-1.72

-5.2

Thermal Coeff. of Optical Path Length (20~100ºC)

10‾⁷/ºC

29

3.6



Standard Doping

Variants

Er 3+

Yb 3+

Cr 3+

Er:Yb:Cr:Glass

0.16x10^20/cm3

12.3x10^20/cm3

0.129x10^20/cm3

Er:Yb:Cr:Glass

1.27x10^19/cm3

1.48x10^21/cm3

1.22x10^19/cm3

Er:Yb:Cr:Glass

4x10^18/cm3

1.2x10^19/cm3

4x10^18/cm3

Er:Yb:Glass

1.3x10^20/cm3

10x10^20/cm3

Customized

You can customise this product to your needs. If you do not find suitable specifications for your application please contact us for custom solution.