Dispersion Prisms
BK7:
Advantages: High optical clarity, low inclusion content, and good transmission from visible to near-infrared wavelengths.
Applications: General-purpose optical components where cost-effectiveness and good performance are essential.
UV Fused Silica (UVFS):
Advantages: Excellent transmission in the UV range, low thermal expansion, and high resistance to thermal shock.
Applications: UV applications, high-power laser systems, and environments with significant temperature fluctuations.
SF11:
Advantages: High refractive index and good dispersion characteristics.
Applications: Precision optics requiring high dispersion and applications in spectroscopy.
Kingwin Optics offers a variety of stock and custom dispersion prisms made from materials like BK7, UV Fused Silica (UVFS), and SF11. These prisms are engineered for use inside the cavity of femtosecond lasers, which operate on very low gain laser transitions. Even slight reflection losses can be intolerable in such high-precision environments. The primary role of a dispersion prism in these applications is to reduce reflection loss and enhance performance within the laser cavity.
Specifications:
| Materials | BK7, UV FS or SF11 |
| Flatness | λ/4@633nm |
| Surface Quality | 20/10 S/D |
| Apex Angle Tolerance | +/2 arc minutes |
Materials and Their Benefits：
BK7:
- Advantages: High optical clarity, low inclusion content, and good transmission from visible to near-infrared wavelengths.
- Applications: General-purpose optical components where cost-effectiveness and good performance are essential.
UV Fused Silica (UVFS):
- Advantages: Excellent transmission in the UV range, low thermal expansion, and high resistance to thermal shock.
- Applications: UV applications, high-power laser systems, and environments with significant temperature fluctuations.
SF11:
- Advantages: High refractive index and good dispersion characteristics.
- Applications: Precision optics requiring high dispersion and applications in spectroscopy.
Applications in Femtosecond Lasers：
Femtosecond Lasers:
- Low Gain Transitions: Operate on very low gain laser transitions where even minor reflection losses can significantly impact performance.
- Dispersion Management: The use of dispersion prisms helps in managing and compensating for dispersion within the laser cavity, ensuring optimal pulse duration and stability.
- High Precision: Essential for maintaining the integrity and quality of femtosecond pulses, crucial in applications such as micromachining, medical imaging, and scientific research.
Kingwin Optics’ dispersion prisms are designed to meet the stringent requirements of femtosecond laser systems, offering minimal reflection loss and high precision in dispersing light. The availability of both standard and custom prisms allows for tailored solutions to meet specific application needs.
