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Er,Yb:Phosphate Glass

●Dopants:Er3+, Yb3+
●Activator:Er3+
●Host:Phosphate glass
● Wavelength of laser:1535nm
● Concentrations: 0.25cm³~1.3cm³
● Cross section for stimulated emission (10 -20 cm²):0.8
● Fluorescent lifetime (ms):9.4-9.8

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The erbium doped concentration of the LD pumped laser glass is 0.25~1.3×1020cm-³, and the light output energy ranges from microjoule to millijoule.Er3+, Yb3+ co-doped phosphate glass, with wider wavelength tuning, lower RIN and narrower laser linewidth, higher conversion efficiency and very wide pump band. It is used to make optical waveguide amplifiers and lasers. The ideal material can achieve 1535nm laser output. As a 1535nm eye-safe radiation source pumped by laser diodes, it can emit eye-safe 1535nm laser radiation, which can be directly used for laser ranging and telecommunication. Recently, it has been used in optical fiber communication to replace EDFA because of more advantages.Er-Yb Doped Waveguide Amplifier (EYDWA) is widely researched as a frontier technology.

LD pumped Er:Glass laser rangefinder modules usually are embedded into targeting system of aircrafts such as airdrones and helicopters etc...because of compact sizes and smaller weight.

Model

DP1535

Dopant

Er3+,Yb3+

Host

Phosphate glass

Laser Parameters

Cross section for stimulated emission (10 -20 cm 2 )

0.8

Fluorescent lifetime (ms)

9.4-9.8

Center lasing wavelength (nm)

1535

Optical Parameters

Refractive index  1535nm 

1.56

Refractive index (d 589.3nm)

1.53

Abbe value

66

dn/dT (10 -6 /ºC) (20~100ºC)

-3

Thermal Parameters

Transformation temp. (ºC)

520

Softening temp. (ºC)

565

Thermal conductivity (25ºC) (W/m. K)

0.75

Coeff. of linear thermal expansion (10 -7 /K)

60

Thermal Coeff. Of optical path length(10 -6/K)

1.2

Other Parameters

Density (g/cm 3 )

3

Chemical durability (weigh loss rate at 100ºC distilled water) (μg/hr.cm 2 )

82

Polishing Specifications

PROPERTIES

Value

Orientation Tolerance

0.5º

Thickness/Diameter Tolerance

±0.05mm

Surface Flatness

λ/8@632nm

Wavefront Distortion

λ/4@632nm

Surface Quality

10-5 scratch-dig

Parallel

10"

Perpendicular

15′

Clear Aperture

>90%

Chamfer

<0.1x45º

Maximum dimensions

Rods (Ф3-12.7mm)

Slabs (3-150)mm²

When ordering Erbium Laser Glass rods/slabs, please specify the following,

W & H: Block  Width & Height (mm)

L: Block Length (mm)

D: Doping (%)

F: Finish (P=Plane, W=Wedge, B=Brewster)

C: Coating Requirements



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