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Cr Yb Erglass 1970°C Melting Point 800 W/M Thermal Shock Resistance Parameter

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Cr Yb Erglass 1970°C Melting Point 800 W/M Thermal Shock Resistance Parameter

Place of Origin : China

Brand Name : CRYLINK

Certification : Iso9001

MOQ : 1 Pieces

Price : negotiation

Packaging Details : Carton

Delivery Time : 3-4 weeks

Payment Terms : TT

Supply Ability : 100 pieces /month

Name : Er,Cr,Yb:Glass

Mohs Hardness : 8.5

Young’s Modulus : 57.6 GPa

Tensile Strength : 2 GPa

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Er,Cr,Yb:Glass

Erbium Glass doped with Er3+, Yb3+ and Cr3+, Erbium doped glass laser provides a useful coherent source in the spectral range near 1.5 m, which is relatively safe for the human eye and is convenient in many applications, such as lidar and range measurements, fiber-optic communication, and laser surgery. In spite of the considerable progress in the development of InGaAs laser diode pump sources, Xe flashlamp will continue to be used as pump sources of Er:glass lasers because of their high reliability and low cost, and also the simplicity of design of such systems. Since about half the flashlamp radiation energy is emitted in the visible and near infrared (IR) ranges, a second sensitizer Cr3+ is introduced into Yb-Er laser glasses to utilize this energy.

Parameter

Material and Specifications
Materials Cr14 CrE5
Orientation [100] or [110]±0.5° [100] or [110]±0.5°
Mass Density 3.10 g/cm3 2.95 g/cm3
Mohs Hardness 8.5 8.5
Young’s Modulus 57.6 GPa 57.6 GPa
Tensile Strength 2 GPa 2 GPa
Melting Point 1970°C 1970°C
Thermal Conductivity 0.7 0.8
Specific Heat/(Jg-1K-1) 0.59 0.59
Thermal Shock Resistance Parameter 800 W/m 800 W/m
Thermal Coeff. of Optical Path Length (10-7 /C)(20~100C) 3.6
Coeff.of Linear Thermal Expansion (10-7 /K) (20~100℃) 103 80.5
Coeff.of Linear Thermal Expansion (10-7 /K) (100~300℃) 127 87
Softening Temp. (C) 493 519
Transformation Temp. (C) 455 476
Chemical Durability (weigh loss rate at 100C distilled water) (g/hr.cm2 ) 103
dn/dT (10-6 /C) (20~100C) -5.2 -6.8
Refractive Index @ 1535 nm 1.53 1.533
Refractive Index (d 589.3nm) 1.539 1.541
Abbe Value 64 63.6

Optical Properties
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 0.75×10-20 cm2@1535nm
Transmission 10% to 90%
Coatings AR≤ 0.2% @1535nm
Damage Threshold: > 500 MW / cm2

Absorption and Emission Spectrum
Polishing Specification
Orientation Tolerance < 0.5°
Thickness/Diameter Tolerance ±0.05 mm
Surface Flatness </8@632 nm
Wavefront Distortion </4@632 nm
Surface Quality 10-5(MIL-O-13830A)
Parallel 10
Perpendicular 15
Clear Aperture >90%
Chamfer <0.1×45°
Maximum Dimensions dia (3-12.7)×(3-150)mm2

Feature

  • High laser efficiency
  • Low laser threshold
  • Safe for human eye
  • High light conversion
  • Lidar
  • Range measurements
  • Fiber-optic communication
  • Laser surgery

Product Tags:

erbium doped glass

      

nd glass

      
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