Complaint
Nd3+:YLF crystal is characterized by its long lifetime of 4F3/2 neodymium energy level. Compared to Nd:YAG, the lower thermal conductivity and a weak negative dn/dT lead to lower thermal distortions and allow to achieve a better output beam quality. Another distinctive feature is the high UV transparency, which is favorable for pumping with xenon flash lamps.
Optical properties of Nd:YLF crystal
| Transparency Range | 180-6700nm |
| Absorption peak wavelength | 792 nm |
| Peak Absorption Coefficient(for 1.2% Nd) | α= 10.8cm-1 (792.0 nm E∥c) α= 3.59cm-1 (797.0 nm E⊥c) |
| Absorption bandwidth at peak wavelength | ~5 nm |
| Peak Stimulated Emission Cross Section | 1.8×10-19/cm2(E∥c) at 1047nm 1.2×10-19/cm2(E⊥c) at 1053nm |
| Spontaneous Fluorescence Lifetime | 485 µs for 1% Nd doping |
| Scatter Losses | <0.2%/cm |
| Laser Wavelength | 1047nm (∥c, a-cut crystal) 1053nm(⊥c, a or c-cut crystal) |
| Chemical Formula | LiY 1.0-x Nd x F4 |
| Space Group | I41/a |
| Nd atoms/cm3 | 1.40 X 1020 atoms/cm3 for 1% Nd doping |
| Modulus of Elasticity | 85 GPa |
| Crystal Structure | Tetragonal |
| Cell Parameters | a=5.16 Å , c=10.85 Å |
| Melting Point | 819ºC |
| Mohs Hardness | 4~5 |
| Density | 3.99 g/cm3 |
| Thermal Conductivity | 0.063 W/cm/K |
| Specific Heat | 0.79 J/g/K |
| Thermal Expansion Coefficients | 8.3×10-6/k∥c 13.3×10-6/ k⊥c |
| dn/dT | -4,6 × 10-6 (||c) K-1, -6,6 × 10-6 (||a) K-1 |
| Doping(atm%): | 0.01% ~ 3% |
| Orientation: | A-cut or C-cut |
| Wavefront Distortion: | λ/8 per inch @ 632.8 nm |
| Dimension Tolerances: | rods with diameter: +0.0/-0.05 mm , Length: ±0.1 mm |
| Surface Quality: | 10/5 Scratch/Dig MIL-O-1380A |
| Parallelism: | < 10″ |
| Perpendicularity: | < 5′ |
| Clear Aperture: | > 90% |
| Surface Flatness: | < λ/10 @ 632.8 nm |
| Chamfer: | < 0.1 mm @ 45° |
| Barrel Finish | 50-80 micro-inch (RMS) , |
| Size | Upon customer request |
| Coating | AR/HR/PR coating upon customer's request |
| Damage Threshold | 750MW/CM2 at 1064nm, TEM00, 10ns, 10Hz |
Other YLF-based Pr/Ho/Tm/Yb/Er/Ce YLF are also available upon request.
Seeopto Co., Ltd. is located in Pidu District, Chengdu. We aims to provide customers with professional design of laser crystal optical lenses, Coating service and all kinds of optical elements processing include YAG based crystals, YLF-based crystals, YVO4 based crystals, glass based laser Material, bonding crystals, silicon, germanium Infrared and semiconductor materials, LBO, BBO, KTP, ZGP Equal nonlinear material, Ti: Sapphire, CaF2, MgF2.optical sapphire customized components, window and aspheric lenses, powell lens and infrared materials products,etc.
We are also interested in discussing and manufacturing new material combinations and structural geometries. Our goal is to provide high-quality composite materials that can provide solutions to your system needs, so we encourage all design submissions. Please contact us for more information and technical support.
We can not only provide kinds of optical components, but also can make various types of optical coating such us Anti Reflection (AR) coating, High-Reflecting coating, Partial Reflection coating and Polarization Beamsplitter coating etc at single wavelength or broadband wavelength. Which can improve the transmission, high reflection. In addition such as Au, Si, Al, Ti metal coatings also is available.
Application of our items are very extensive and involves in mailitary project, aerospace, industry, scientific, medical instrument, photoelectric device, optical communication and mechanical equipment and so on. In the meantime we also cooperate with internal companies, we offer optics design and OEM service!
We constantly provide our clients with′ Quality products, excellent service, competitive prices and prompt delivery′ , sincerely welcome domestic and foreign customers to establish cooperation with us, creating a bright future in optical field!
What can we do for you ?
Seeopto Co., Ltd provide professional design of laser crystal optical lenses, Coating service and all kinds of optical elements processing We are also interested in discussing and manufacturing new material combinations and structural geometries.
Our goal is to provide high-quality composite materials that can provide solutions to your system needs, so we encourage all design submissions. Please contact us for more information and technical support.
Why choose Us ?
1. Reasonable quotation. We reject unrealistic low prices. As a prerequisite, to ensure the highest quality of Optical components and offer the reasonable price.
3. Timely Delivery. We will deliver the goods timely/promptly or deliver the goods in time.
4. Convenient logistics services. We usually cooperate with the famous express logistics company, including 90% regions of the world and ensure the products can delivery to the customers safety and quickly
