Laser Windows

Description

1.  Features

• High Transmission: Ensures excellent light throughput with minimal loss of energy.
• High Damage Threshold: Capable of handling high laser power without performance degradation.
• Excellent Thermal Stability: Ideal for systems requiring consistent performance under varying thermal conditions.
• Low Wavefront Distortion: Reduces any potential distortion for enhanced optical performance.
• Versatile Applications: Suited for laser cutting, welding, and marking applications.

2. General Description

Laser windows are crucial components in laser systems, particularly for applications involving high-power laser transmission, such as laser cutting, welding, and marking. These windows are designed to withstand high temperatures and laser intensity, offering a high damage threshold while maintaining high transmission efficiency. Laser windows are crafted from high-quality materials and coatings that ensure excellent thermal stability and low wavefront distortion, allowing them to function efficiently across a wide range of operational environments. At SOT, we provide laser windows optimized for specific wavelengths, including 1070 nm and 10.6 µm ranges, ensuring compatibility with various laser systems such as CO2 lasers and YAG lasers. The precise engineering of these windows guarantees minimal distortion, ensuring high-precision performance in laser-based processes.

3. Spectrum Transmission Curves

If the standard components are unavailable, SOT offers customized solutions tailored to meet specific operational needs, ensuring optimal performance for various laser systems. These customizations can be based on the wavelength, size, and other critical parameters depending on your application.

4. Coating Quality

• Adhesion Test: Compliant with MIL-C-675C military standards. The test involved applying a tape that meets LT-90 specifications onto the lens film layer. The tape was fully affixed and removed vertically three times, with no blistering or peeling.
• Temperature Test: Following MIL-C-675C specifications, test pieces were subjected to temperatures of -62±1℃ and 71±1℃. The adhesion test was repeated after two hours at room temperature, confirming no film detachment.
• Abrasion Resistance Test: Conforms to MIL-C-675C and CCC-C-440 standards, involving a gauze tester applying a force of 1.0 lbs (0.45 kg) to the film. This test was repeated 25 times with gauze widths of 1/4 inch (6.4mm) and 3/8 inch (9.5mm), with no surface damage.
• Humidity Test: Conducted under MIL-C-675C criteria, where test pieces were exposed to 95%~100% humidity at 49±2℃ for 24 hours. No peeling, scratches, or defects were found.
• Solvent and Cleaning Testing: In compliance with MIL-C-675C standards, test pieces were exposed to acetone and alcohol at room temperature. After cleaning, no signs of peeling or scratches were observed on the surface.
• Salt Spray Test: After 100 hours in a 35°C environment with a 5% saltwater concentration, the window surfaces showed no damage.

5. Standard Specifications

Material Options: JGS1, ZnSe
Diameter Tolerances: +0/-0.1 mm
Thickness Tolerances: ±0.05 mm
Surface Quality: 40-20
Parallelism: 3’
Coating Specifications:

• 1070 nm: R < 0.2% @ 1060-1080 nm
• 10.6 µm: Custom coatings available upon request

6. General Applications and Examples

Laser windows are designed for demanding applications, especially where lasers require high precision and high power transmission. Some of the most common uses include:

• Laser Cutting: High-powered lasers pass through the windows for material cutting, where precision is essential.
• Laser Welding: In laser welding, these windows allow the laser to pass through while protecting sensitive equipment from heat and plasma.
• Laser Marking: Laser windows are also used in industrial marking applications where consistent performance is required for engraving or labeling.
• CO2 Laser Systems: Specifically designed for CO2 lasers, laser windows in this application must endure the high power while transmitting the right wavelength.
• YAG Laser Systems: Laser windows are tailored for YAG laser systems, offering high durability and precision.

7. SOT Strengths and Capabilities

Shape Optics Technologies Pte Ltd (SOT) specializes in providing high-quality optical components for a variety of laser systems. We offer extensive expertise in the development and manufacturing of custom optical solutions that meet the specific needs of our clients. Our commitment to high precision and the highest damage thresholds ensures that our laser windows perform at their best under demanding conditions. With strong capabilities in laser optics, including custom coatings and tailored optical designs, SOT is your reliable partner for precision-engineered solutions that meet the most challenging requirements.

8. Standard Products