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Introduction:
Lithium yttrium fluoride crystal (chemical formula: LiYF₄, abbreviated as YLF) belongs to the tetragonal crystal system and exhibits birefringence. It can generate laser output with polarization along the c-axis andpolarization perpendicular to the c-axis, making it an excellent laser crystal substrate material.Lithium yttrium fluoride crystals doped with various rare earth elements exhibit exceptionally diverse laser properties, making them laser crystal products with outstanding comprehensive performance.
Nd:YLF laser crystals, featuring a broad Quenching Absorption Band, long fluorescence lifetime, and low thermal lensing effect, represent a class of high-performance solid-state gain medium materials. They can be applied in high-energy pulsed lasers, continuous-wave lasers, diode-pumped solid-state lasers, and also find excellent applications in medical lasers and scientific research lasers.
Tm:YLF laser crystals, characterized by high slope efficiency, long fluorescence lifetime, and low thermal lensing effects, represent a class of high-performance laser crystals. With an emission wavelength of 1.91 μm, they fall within the eye-safe wavelength range and find extensive applications in laser medicine, lidar, industrial processing, and other fields.
Pr:YLF laser crystal, capable of being pumped by a blue light LD and directly emitting visible light, with laser output covering the orange-red (604nm), green (523nm), and blue (479nm) bands. It offers exceptionally unique applications in laser displays, laser televisions, bioimaging, quantum optics, and scientific research lasers.
Technical Specifications：
Chemical formula |
Nd:YLF |
Pr:YLF |
Tm:YLF |
Doping concentration |
0. 1～2 at% |
0.1%~2% |
0.1%-10% |
Growth direction |
[100]/[001] |
[100]/[001] |
[100]/[001] |
Pump Band |
790-800nm |
440-446nm |
685/780nm |
Transmission Band |
1047/1053 |
479/523/605 |
1908 |
Flash life |
480us |
10ms |
50us |
μm Refractive Index μm |
n=1.4503@792nm |
1.4593@444nm |
1.4518@685 nm |
Hardness (Mohs) |
~4 |
~4 |
~4 |
Standard Products and Processing Specifications：
Size |
2*2~8*8 mm2 or others |
Parallelism |
30 arcsec |
Flatness |
λ/8 |
Wavefront distortion |
λ/4 |
Clear aperture |
90% |
chip |
0.1 mm |
Chamfer |
0.1mm×45° |
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