Neodymium-doped Gadolinium Orthovanadate (Nd:GdVO4) is a highly efficient laser crystal that has gained attention for its superior properties in diode-pumped solid-state laser systems. Similar to Nd:YVO4, this crystal is known for its excellent laser performance but offers unique advantages due to the gadolinium host matrix.
Properties of Nd:GdVO4:
- High Absorption Coefficients: Nd:GdVO4 has higher absorption coefficients at typical diode laser wavelengths compared to Nd:YVO4, making it highly efficient for diode pumping.
- High Output Power: It can produce higher output power with lower thermal loading, which is beneficial for applications requiring high power and continuous operation.
- Broad Emission Bandwidth: This crystal features a broader emission bandwidth, which enhances its ability to produce tunable laser outputs, suitable for a range of wavelengths.
- Good Thermal Conductivity: Nd:GdVO4 has good thermal conductivity, which helps in managing heat effectively, maintaining the stability and quality of the laser beam under high-power conditions.
Applications:
- High-Power Lasers: Due to its high power handling capabilities, Nd:GdVO4 is commonly used in applications that require robust, high-power laser output such as material processing and laser cutting.
- Precision Marking and Engraving: The crystal’s properties make it ideal for use in precision engraving and marking systems used in the manufacturing of semiconductors and fine mechanics.
- Medical Laser Systems: It is employed in medical laser equipment for surgeries and therapeutic applications, where high beam quality and stability are crucial.
- Scientific Research: Nd:GdVO4 is used in scientific experiments, particularly in the fields of spectroscopy and nonlinear optics, where its broad emission bandwidth allows for versatile experimental setups.
The production of Nd:GdVO4 involves doping Gadolinium Orthovanadate with neodymium ions in a controlled environment to ensure optimal distribution and concentration. The growth process of this crystal must be meticulously managed to achieve the desired optical qualities and performance characteristics, ensuring its effectiveness in advanced laser applications.
Shapeoptics is Able to Offer
- Nd dopand concentration from 0.2%～ 3% (atm%)
- Rod diameter from 1mm～35mm
- Length from 1mm～50mm
- Coating upon your request
Standard Specifications
| Dopant Concentration Tolerance | +/- 0.1% |
| Parallelism / arc seconds | < 10 |
| Perpendicularity / arc minutes | < 5 |
| Chamfer / mm | 0.1 @45° |
| Clear Aperture | 95% |
| Scratch and Dig | 20/10 or better |
| Surface Flatness | lamda/10 @633nm |
| Wavefront Distortion | lamda/8 @633nm |
| Damage Threshold / J.cm-2 | > 15 (TEM00, 10ns, 10Hz) |
Physical and Optical Properties
| Crystal Structure | Zircon Tetragonal, Space group D4h |
| Lattice Constants / A | a=b=7.21, c=6.35 |
| Density / g.cm-3 | 5.47 |
| Melting Point / ℃ | 1780 |
| Thermal Expansion Coefficient / K-1 | aa = 1.5 x 10-6 @300K
ac = 7.3 x 10-6 @300K |
| Thermal Conductivity / W.m-1K-1 | 11.7, parallel < 110 > axis |
| Lasing Wavelength / nm | 912.6, 1063.1, 1341.3 |
| Emission Cross Section / cm2 | 7.6 x 10-19 @1064nm |
| Peak Absorption Wavelength / nm | 808.5 |
| Absorption Cross Section / cm2 | 4.9 x 10-19 @808nm |
| Absorption Coefficient / cm-1 | 74 @808nm |
| Absorption Length / mm | 0.18 @808nm |
| Refractive Index (@1064nm) | no=1.972, ne=2.192 |
| Fluorescence Lifetime / s | 95 (1.2% Nd) |
| Loss Coefficient / cm-1 | 0.003 @1064nm |
| Intrinsic Loss / cm-1 | < 0.1% @1064nm |
| Line Width / nm | 0.6 |
| Polarized Laser Emission | P Polarized, parallel c-axis |
| Diode Pumped Optical to Optical Efficiency | > 60% |
Sellmeier Equation (no doped GdVO4)
n 2 = 4.734369 + 0.1216149/(lamda2-0.0523664) – 0.13927lamda2
n 2 = 3.8987165 + 0.05990622/(lamda2-0.0514395) – 0.011319lamda2
Neodymium doped Gadolinium Orthovanadate (Nd:GdVO4) laser crystal has large stimulated emission cross section at laser wavelength, high absorption coefficient, low dependency and wide bandwidth at pump wavelength. We can offer Nd and no dopant GdVO4 laser crystals performing the specifications upon your request.
Shapeoptics offers a comprehensive range of materials and advanced equipment for custom and OEM optical components, leveraging over 20 years of expertise in manufacturing lenses, prisms, windows, and more. We utilize high-quality materials like UV and IR grade fused silica, Germanium, and ZnSe, among others. Our state-of-the-art techniques and equipment minimize waste and optimize delivery times. Our in-house capabilities include standard and custom coatings across the UV-NIR spectrum, ensuring high quality and compliance with all industry standards. For precision and reliability in optics, contact Shapeoptics for your next project.
