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Ce.Nd:YAG
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The Nd,Ce:YAG crystal is a YAG - based material with the addition of Nd ions and Ce sensitizing ions. Ce ions can effectively absorb photon energy in the ultraviolet spectral region and transfer the absorbed energy to Nd ions through non - radiative transitions. This increases the spectral utilization rate, and the electro - optical conversion efficiency of Nd,Ce:YAG is 30% - 50% higher than that of Nd:YAG crystals. It is the preferred material for low - repetition - rate, high - pulse - energy lasers and is widely used in fields such as small - scale laser rangefinders and laser medical treatments.
Characteristics of Nd,Ce:YAG
● High efficiency
● Low threshold
● Good ultraviolet radiation resistance
● Good thermal stability
● Excellent repetition rate characteristics
Basic Parameters
| Item | Parameter |
| Chemical formula | Nd3+,Ce3+:Y3AI5O12 |
| Doping concentration | Nd: 0.9 - 1.1at% |
| Crystal orientation | [111] |
| Transmission wavefront distortion | λ/8 per inch @632.8nm |
| Extinction ratio | ≥30dB |
| Crystal rod dimensions | Diameter: 2 - 30mm, Length: 30 - 150mm, customizable according to customer requirements |
| Dimensional tolerance | Diameter: ±0.02mm, Length: ±0.5mm |
| Cylindrical surface processing | Precision grinding, polishing, threading |
| End - face parallelism | ≤10″ |
| Perpendicularity of the end - face to the rod axis | ≤5′ |
| End - face flatness | λ/10 per inch @632.8nm |
| Surface finish | 20 - 10(MIL - PRF - 143830B) |
| Edge chamfer | 0.1mm@45° |
| Clear aperture | >95% |
| Antireflection film reflectivity | R<0.2%@1064nm |
| Laser - induced damage threshold of the film layer | >500MW/cm2 |
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