Crystals Materials
Pr:YLF Crystals for aerospace, medical, and industrial applications
Pr3+:YLF crystal has been found to be a promising laser material for producing visible lasers directly and UV lasers through intracavity second-harmonic generation. Under LD pump with wavelength of 444 nm, Pr: YLF Crystal has five relatively strong absorption peaks, which are 523 nm, 604 nm, 640 nm, 698 nm and 720 nm respectively. Among them, 570 to 620 nm laser light source has many applications in environmental and medical fields. The laser with 720 nm Pr: YLF Crystal doubling frequency into 360 nm wavelength through nonlinear crystal has also made great contribution to the micro manufacturing industry.
| Material | Pr:LiYF4 |
|---|---|
| Doping | 0.1 ~ 2 atm% |
| Orientation | a-cut or c-cut |
| Dimension Tolerances | ±0.05 mm |
| Surface Quality | 10/5 S/D |
| Parallelism | < 10 arcsec |
| Perpendicularity | < 5 arcmin |
| Clear Aperture | > 90% |
| Wavefront Distortion | λ/10 @ 633 nm |
| Surface Flatness | < λ/10 @ 632.8 nm |
| Chamfer | < 0.1 mm @ 45° |
| Coating | AR/HR/PR coating upon customer's request |
| Damage Threshold | > 5J/cm2@532nm, 10ns |
| Crystal Structure | tetragonal |
| Lattice Constants | a=5.164 Å, c=10.732 Å |
| Specific Mass | 3.95 g/cm3 |
| Melting Point | 819°C |
| Thermal Conductivity | 6 W/m/K |
| Mohs Hardness | 5 |
| Thermal Expansion | ~16 × 10-6 K-1 |
| Absorption Peak Wavelength | 444 nm |
| Absorption Cross-section at Peak | 8 × 10-20 cm2 |
| Absorption Bandwidth at Peak Wavelength | ~5 nm |
| Laser Wavelengths | 523 nm, 607 nm, 639 nm, 698 nm, 721 nm |
| Emission Cross-section | 20 × 10-20 cm2 |
| Refractive Index @1064 nm | no=1.448, ne=1.470 |
| dn/dT | -5.2 × 10-6 (||c) K-1, -7.6 × 10-6 (||a) K-1 |
| Thermal Expansion Coefficient | ~16 × 10-6 K-1 |
| Typical Doping Level | <1 at.% |
Stock specification list
If need other specifications and quantities products, please contact us(sales@aogcrystal.com).
Anti-reflection coatings are available at your specified wavelength.
Be sure to wear laser safety goggles when checking optical path and adjusting optical axis.
To inquiry or order a finished Pr:YLF laser rod, please specify the specification listed above, for common application, we only need to know the main specification: Pr-dopant concentration, sizes, and coating. For special request,
please specify specification in details for evaluation and fabrication.
| Part Number | Face size | Length | Doping, atm.% | Orientation | Coating |
|---|---|---|---|---|---|
| Pr-YLF-001 | 2.0*2.0 mm | 6.0 mm | 0.5 | a-cut | AR/AR@440-444 nm+500-725 nm |
| Pr-YLF-002 | Φ3.0 mm | 6.0 mm | 0.5 | a-cut | AR/AR@440-444 nm+500-725 nm |
| Nd-YLF-003 | 3.0*3.0 mm | 5.0 mm | 0.5 | a-cut | HR@522 nm+AR@444 nm/AR@522 nm |
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