Erbium Glass (er:glass)
Erbium-doped phosphate laser glass(er:glass) is described as emitting eye-safe1.54mm laser light,with stimulated-emission cross section written8´10-21cm⁻² and fluorescence lifetime>8.2ms. Uses include field ranging,target designation,medical devices,LiDAR,vehicle collision prevention,helicopter cable avoidance,atmospheric observation and communications. Rod sizes are written f1–20(d)×10–120(l)mm,with sheets also available. A typical xe-lamp-pumped f3×30 version has threshold<6j and slope efficiency>1.8%for ranging. LD-pumped versions use different Er/Yb concentrations for waveguide/fiber amplifiers and communications.
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Overview
Specifications
| Parameter | Value |
|---|---|
| Erbium Laser Glass Characteristics - Large Excitation Wavelength lm | 1535.861nm |
| Erbium Laser Glass Characteristics - Fluorescence Half-Width (dl) | 29.9nm |
| Erbium Laser Glass Characteristics - Fluorescence Lifetime t | > 8.2ms |
| Erbium Laser Glass Characteristics - Absorption at Excitation Wavelength | < 0.002cm⁻¹ |
| Erbium Laser Glass Characteristics - Free-Running Oscillation Threshold eth | eth< 6J |
| Erbium Laser Glass Characteristics - Free-Running Oscillation Slope Efficiency | > 1.8% |
| Erbium Laser Glass Characteristics - Q-Switched Output with 11j Input | > 20MJ |
| Laser Characteristics - Stimulated Emission Cross Section | 0.8 10-20cm² |
| Laser Characteristics - Fluorescence Lifetime (Milliseconds) | 7.7-8.0 ms |
| Laser Characteristics - Central Laser Wavelength | 1535 nm |
| Optical Properties - n [1535nm] | 1.530 |
| Optical Characteristics - ND | 1.539 |
| Optical Characteristics - Abbe Number | 64 |
| Optical Characteristics - dn/dT [20~100℃] | -5.2 10⁻⁶/℃ |
| Optical Characteristics - Coefficient of Linear Thermal Expansion [20~100℃] | 103 |
| Optical Characteristics - Thermal Coefficient of Optical Path Length [20~100℃] | 3.6 10⁻⁷/℃ |
| Thermal Properties - Transition Temperature | 455 °C |
| Thermal Properties - Softening Temperature | 493 °C |
| Thermal Properties - Thermal Conductivity (25℃) | 0.70 W/m.K |
| Thermal Properties - Coefficient of Linear Thermal Expansion [100~300℃] | 127 10⁻⁷/℃ |
| Thermal Properties - Density | 3.10 g/cm³ |
| Thermal Properties - Chemical Durability (Weight Loss Rate in 100℃ Distilled Water) [Weight-Loss Rate in Distilled Water at 100℃] | 103 μg/hr.cm² |
Datasheet
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