Er:Yb:Glass

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Tel：+86-532-88703980

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Er:Yb:Glass is an active gain medium, it generates 1535nm laser, which is an eye-safe wavelength. This wavelength is favorable in laser range finding and telecommunication applications. Er,Yb:Glass can be used together with Cobalt Spinel to form a passive Q-switched laser, which can generate short 1535nm laser pulses of less than 10ns. CRYSTECH has developed a unique technique of bonding technology to bond Er,Yb:Glass with Cobalt Spinel. By using this bonding technique, very small bonded crystals can be produced, and it allows engineers to develop miniature lasers based on such small bonded crystals. For more information, please see our product 1535nm bonded crystal.

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Product Specifications Physical & Optical Properties Product Features & Applications

Product Specifications

Dimension Tolerance	Width(+/-0.1) * Height(+/-0.1) * Length (+1/-0.5) mm
Scratch/Dig	10/5	Perpendicularity	≤ 10 ′
Parallelism	≤ 30 ″	Chamfer	< 0.1mmx45°
Flatness	λ/10	Chips	< 0.1mm
Wavefront Distortion	<λ/2 per inch	Clear Aperture	≥ 90%
Scratch/Dig	10/5	Perpendicularity	≤ 10 ′
Coatings	AR(R<0.2%)@1535nm + AR(R<0.5%)@940nm on both faces

Physical & Optical Properties

Absorption peak wavelength (nm)	970
Absorption cross-section at a peak wavelength (cm²)	1.7×10^-20
Absorption bandwidth at a peak wavelength (nm)	20
Laser wavelength (nm)	1535
Emission cross-section @1535 nm (cm²)	8 × 10^-21
Yb to Er energy transfer efficiency	>90 %
Refractive index @1534 nm	1.52
Density (g/cm³)	2.93
Mohs hardness	6-7
Thermal conductivity (Wm^-1K^-1)	0.85
dn/dT (K^-1)	-2.1 × 10-6
Thermal expansion coefficient (K^-1)	12.4 × 10-6
Typical doping level (cm^-3)	0.3-1.3 × 10²⁰ [Er]
Typical doping level (cm^-3)	1.7-4 × 10²¹ [Yb]

Absorption and Emission Spectrum

Description:

Er:Yb:Glass is an active gain medium, it generates 1535nm laser, which is an eye-safe wavelength. This wavelength is favorable in laser range finding and telecommunication applications.

Er,Yb:Glass can be used together with Cobalt Spinel to form a passive Q-switched laser, which can generate short 1535nm laser pulses of less than 10ns.

CRYSTECH has developed a unique technique of bonding technology to bond Er,Yb:Glass with Cobalt Spinel. By using this bonding technique, very small bonded crystals can be produced, and it allows engineers to develop miniature lasers based on such small bonded crystals. For more information, please see our product 1535nm bonded crystal.

Applications ：

·Laser range finding

·Lidar

·Target designation

Features:

·Eye-safe wavelength

·Wide absorption band

·Long fluorescence lifetime

·High slope efficiency