ISO 9001 - AS 9100 - ITAR Standard & Custom Optical Filters and Coatings

Dual-Band Filters

Among our standard capabilities in the production of high-performance optical coatings are Dual-Band Anti-Reflective (AR) and Dual-Bandpass filters, designed for applications requiring precise control over multiple wavelength bands, including YAG and eye-safe laser lines such as 1064 nm and 1550 nm. 

What Are Dual-Band AR and Bandpass Filters?

Dual-Band AR and Bandpass filters are engineered to optimize the transmission and reflection of two distinct wavelength bands within a single optical element. The Dual-Band AR coatings minimize reflections across both wavelength ranges, enhancing the efficiency of optical systems. Meanwhile, Dual-Band Bandpass filters allow for the precise transmission of selected wavelengths while blocking others, ensuring clarity and performance in demanding applications.

Key Laser Lines: 1064 nm and 1550 nm

A YAG laser system used for eye surgery
  • 1064 nm (YAG): Yttrium Aluminum Garnet (YAG) lasers, operating at 1064 nm, are widely used in industrial, medical, and scientific applications due to their high power and efficiency.

  • 1550 nm (Eye-Safe): The 1550 nm wavelength is known as eye-safe, making it ideal for applications where human exposure to laser radiation is a concern, such as in range-finding and LiDAR systems.

Applications:

  • Medical Devices: Dual-Band filters for precise wavelength management in laser-based medical equipment.

  • Defense & Aerospace: AR and Bandpass filters for laser systems used in targeting, communication, and range finding.

  • Industrial Lasers: Filters that enhance the performance of high-power YAG lasers in manufacturing and material processing.


In addition to our standard Dual-Band AR and Bandpass filters for YAG and eye-safe laser lines, Andover Corporation also offers the capability to create custom dual-band filters tailored to your specific application needs. Whether you require specialized wavelengths or unique performance characteristics, our team is equipped to design and fabricate filters that meet your exact specifications.