ND:YAG Crystal
Nd:YAG is a widely used solid-state laser gain medium. Its 106nm laser output is used in industry, agriculture, medicine and defense. Its strong overall performance combines high gain, low threshold, high efficiency, low loss, good thermal conductivity and thermal-shock resistance. It supports continuous-wave, pulsed, Q-switched, mode-locked and frequency-doubled operation for industrial, medical, military and research uses. The company supplies high-quality, large Nd:YAG rods for high- and ultrahigh-power lasers.
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Overview
Specifications
| Parameter | Value |
|---|---|
| Nd Doping concentration | 0.5–1.2 atm%, concentration tolerance ±10% |
| Diameter | 3 ~ 14mm |
| Length | 0.5 ~ 160 mm |
| Crystal orientation | <111> Crystal orientation （±0.5°） |
| Surface figure λ [@633nm] | <λ/8 @ 633nm |
| Surface finish | 20/10 |
| Parallelism | ＜30″ |
| Perpendicularity | ＜10′ |
| Wavefront distortion λ [@633 nm] | <λ/8 @ 633 nm |
| Clear aperture | > 90% |
| Coating | According to customer requirements |
| Chemical formula | Nd:Y₃Al₅O₁₂ |
| Crystal Structure | Cubic crystal system |
| Lattice constant | 12.01 Å |
| Doping concentration | Approximately 1.2 × 10²⁰ cm⁻³ |
| Melting point | 1970 °C |
| Density | 4.56 g/cm³ |
| Mohs hardness | 8.5 |
| Refractive Index | 1.82 |
| Coefficient of thermal expansion [0 – 250 °C] | [111]Direction 7.8 × 10⁻⁶ /K (0 – 250 °C) |
| Thermal conductivity | 14 W/m·K at 20 °C; 10.5 W/m·K at 100 °C |
| Laser Wavelength | 1064 nm |
| Terminal-level relaxation time | 30 ns |
| Radiative lifetime | 550 ms |
| Spontaneous fluorescence lifetime | 230 ms |
| Loss coefficient [@1064 nm] | 0.003 cm⁻¹ @ 1064 nm |
| Pump Wavelength | 807.5 nm |
| Pump Wavelength Absorption bandwidth | 1 nm |
| Polarized emission | Unpolarized |
| Thermal birefringence | High |
Key Features
Datasheet
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