Nd:YLF crystal is very suitable for mode-locked mode to obtain short pulse laser crystals. It has the characteristics of small thermal lens effect, large fluorescent linewidth and output polarization. Nd:YLF can be used in linearly polarized resonators, mode-locked lasers, diode-pumped Nd:YLF lasers and Ti: sapphire chirped pulse amplifiers.
Main features:
♦ Lower excitation light threshold for continuous laser applications
♦ Long life of 4F3/2 neodymium energy level
♦ Output polarized, high UV transparency
♦ Small thermal lens effect
♦ High power, low beam divergence, efficient single-mode output
♦ Ultra-large fluorescent line width
Typical applications:
♦ Mode-locked lasers
♦ Diode Pumped Nd:YLF Lasers
♦ 1047 nm and 1053 nm continuous wave pulse operation
♦ Linearly polarized resonator Qswitching and frequency doubling
♦ Ultrashort pulse laser
Absorption and emission curves of Nd:YLF
Technical Parameters
| Argument Name | Values and Ranges |
Size tolerance | +0/-0.1 mm |
Clear aperture | > 90% |
Finish | 10/5 |
Flatness | λ/8@633nm |
Wavefront distortion | < λ/4@633nm |
Parallelism | < 10 arc sec |
Perpendicularity | < 5 arc min |
Doping concentration | 1.1 ± 0.1% |
Coating | R < 0.15%@1047/1053nm |
| Quality warranty period | 1 year (with normal use) |
Crystal Structure and Physical Properties
| Argument Name | Values and Ranges |
Crystal structure | Tetragonal |
Crystal parameters | a=5.16 Å , c=10.85 Å |
Melting point | 819°C |
Mohs hardness | 4~5 |
Density | 3.99 g/cm3 |
Transmission range | 180 - 6700 nm |
Spike in the cross-section of the stimulated radiation | 1.8 × 10-19/cm2(E∥c) at 1047nm； 1.2 × 10-19/cm2(E⊥c) at 1053nm |
Natural fluorescence lifetime | 485 µs for 1% Nd doping |
Scattering loss | < 0.2%/cm |
Maximum absorption coefficient（for 1.2% Nd） | α= 10.8 cm-1 (792.0 nm E∥c)； α= 3.59 cm-1 (797.0 nm E⊥c) |
Laser wavelength | 1047 nm (∥c, a-cut crystal) 1053 nm (⊥c, a or c-cut crystal) |
Thermal conductivity | 0.063 W/cm/K |
Specific heat | 0.79 J/g/K |
Coefficient of thermal expansion | 8.3 × 10-6/k∥c； 13.3 × 10-6/ k⊥c |
Standard Size
| Product NO. | Diameter (mm) | Length (mm) | Doping% | Coating |
| N-Y-301 | 3 | 10 | 1.1% | AR/AR@1064 nm |
| N-Y-302 | 3 | 50 | 1.1% | AR/AR@1064 nm |
| N-Y-501 | 5 | 10 | 0.8% | AR/AR@1064 nm |
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