Er Glass (Er,Yb:Glass)
Description
Er3+ emission transition occurs within this wavelength range corresponding to the 4I13/2 →4I15/2 . However, Er3+absorption itself is too weak to allow direct pumping and so, energy transfers are required. The most efficient ones are given by Yb3+ ions under absorption from the 2F7/2 → 2F5/2 transition, followed by energy transfer to the 4I11/2 Er3+ level and fast nonradiative transition to the Er3+ 4I13/2 level which emits the expected fluorescence.Er,Yb:glass laser with radiation output at the wavelength of 1540 nm does not require the addition of additional components.
Er3+/Yb3+ co-doped phosphate glass — as the 1540nm eye-safe radiation sources pumped by LD which can emit eye-safe 1540nm laser radiation directly used in laser ranging finder and telecommunication communication
As an eye-safe wavelength laser, 1540um ,Er3+/Yb3+ co-doped phosphate glass lasers have attracted much attention for their compactness and low cost, such as laser generation and signal amplification because the wavelength of 1540nm is just at the position of the eye-safe and the fiber optic communication window. 1540nm lasers have used in ranging finder, radar, target recognition. Er3+/Yb3+ co-doped phosphate glass cooperate with passive Q-Switch crystal -co:spinel to get 1540nm pulse solid-state laser.
Er Glass (Er,Yb:Glass)
Specifications |
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|---|---|
| Type Of Crystal: | TeO2 |
| Crystal Diameter: | 10 mm |
| Crystal Length: | 8.2 mm |
| AR Coating: | One side |
| Cross Section For Stimulated Emission : | 0.8 (10-20cm2) |
| Fluorescent Lifetime : | 7.7-8.0 (ms) |
| Center Lasing Wavelength: | 1535 (nm) |
| Refractive Index (1535nm): | 1.524 |
| Transformation Temp: | 556 (℃) |
| Coeff.of Linear Thermal Expansion: | 87 (10-7/K) (20~100℃) |
| Thermal Conductivity: | 0.7 (25℃) (W/mK) |
Features
Wide absorption band
Long fluorescence lifetime
High optical quality
Safety for eye
High slope efficiency
Applications
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How to order?
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Ships from:
China
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Sold by:
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On FindLight:
since 2019
Frequently Asked Questions
Yes, the Er,Yb:glass laser is eye-safe as it emits radiation at the wavelength of 1540 nm, which is within the eye-safe range.
The applications of the Er,Yb:glass laser include laser ranging finder, telecommunication communication, radar, target recognition, and Er glass fiber amplifier.
The transformation temperature of EAT14 glass is 556 ¥ and that of WM4 glass is 530 ¥. The softening temperature of EAT14 glass is 605 ¥ and that of WM4 glass is 573 ¥. The coefficient of linear thermal expansion of EAT14 glass is 2.9 x 10-7/K and that of WM4 glass is 1.4 x 10-7/K.
The most efficient energy transfer process for the Er,Yb:glass laser is from Yb3+ ions under absorption from the 2F7/2 → 2F5/2 transition, followed by energy transfer to the 4I11/2 Er3+ level and fast nonradiative transition to the Er3+ 4I13/2 level which emits the expected fluorescence.
The radiation output wavelength of the Er,Yb:glass laser is 1540 nm.