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 1535nm laser due to its eye-safe wavelength of 1535 nm and high transmission through atmosphere. It’s also suitable for medical.

Product Details


Description


Er glass for 1550nm eye safe laser used for nanosecond rangefinder with passive or active q-switch and high repetition rates(1-6hz), flash lamps and diode pumped laser system. In dermatology, Er glass laser is applied to Fractional laser and treatment of ance scar, skin, wrinkles and melisma. Different concentration and type (Cr14 and EAT14) could customized.


Erbium and ytterbium co-doped phosphate glass has a broad application because of the excellent properties. Mostly, it is the best glass material for 1535nm laser due to its eye-safe wavelength of 1535 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.

We can also produce erbium laser glass with various ions doping according to your requirement. WM4: Erbium phosphate glass for ion-exchange purpose; Cr14: Erbium phosphate glass for xenon lamp pumping laser device and laser range-finder. EAT14: Yb3+, Er3+ Co-doped phosphate glass. CrE5 is for large energy output application. The glass rod of CrE5 can work safely at 1Hz repetition after surface strengthing treatment at over 10J output level.


Features

• Wide pump band

• High optical quality

• Operates in a long-wavelength, high water peak region

• Ideal for hard tissue removal

• Very high slope efficiency

• Operate in a relatively eye-safe wavelength range


Applications

• Laser resurfacing

• Bone surgery

• Dental use


Chemical and physical properties

Property

Value

Value

Value

Value

Products

Cr14

CrE5

WM4

EAT14

Orientation

[100] or [110]  ±0.5°

[100] or [110]  ±0.5°

[100] or [110]  ±0.5°

[100] or [110]  < ±0.5°

Mass density 

3.10 g/cm3

2.95 g/cm3

2.83g/cm3

3.06 g/cm3

Mohs hardness

8.5

8.5

8.5

8.5

Young's modulus

57.6 GPa

57.6 GPa

57.6 GPa

57.6 GPa

Tensile strength

2 GPa

2 GPa

2 GPa

2 GPa

Melting point

1970°C

1970°C

1970°C

1970°C

Thermal conductivity

0.70

0.80

0.70

0.70

Specific Heat/(J·g-1·K-1)

0.59

0.59

0.59

0.59

Thermal Expansion /(10-6   /°C@25°C ) 

127

87

96

95

Thermal shock resistance parameter

800 W/m

800 W/m

800 W/m

800 W/m

Refractive Index @ 1535 nm

1.530

1.533

1.528

1.524


Optical properties

Property

Value

Optical Density    

0.1 to 0.8

Fluorescence lifetime

7.7-8.2 ms

Concentrations

0.5 mol % ~ 3 mol %

Emission wavelength

1535 nm

Absorption Coefficient

1.0 cm-1 ~ 7 cm-1

Emission state absorption cross section:

0.75x10-20 cm2@1535nm

Transmission

10% to 90%

Coatings

AR≤ 0.2% @1535nm

Damage Threshold:

> 500 MW / cm2


Polishing Specification

Property

Value

Orientation Tolerence

< 0.5°

Thickness/Diameter Tolerance

±0.05 mm

Surface Flatness

<λ/8@632 nm

Wavefront Distortion

<λ/4@632 nm

Surface Quality

10/5

Parallel

10〞

Perpendicular

15ˊ

Clear Aperture

>90%

Chamfer

<0.1×45°

Maximum dimensions

dia (3-12.7)×(3-150)mm2


With Laser Crystals for sale, it is one of the leading manufacturers and supplies of good Er Glass, welcome to buy and wholesale products at good price from our factory.

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