High Power Single Fiber Collimator (GK-HPC Series)

High Power Fiber Collimators are designed to handle high optical power levels, often used in applications such as fiber lasers, fiber amplifiers, and high-power free-space coupling. These collimators are engineered to maintain low insertion loss and high return loss while withstanding high power densities. They can be found in various configurations, including polarization-maintaining and large mode area (LMA) types, to cater to different beam characteristics and power handling requirements.

Key specifications to consider when selecting a high power fiber collimator include the operating wavelength range, which can span from 200nm to 2100nm, the maximum optical input power that the collimator can handle, and the return loss, which is crucial for minimizing back reflections . The collimated beam diameter and divergence angle are determined by the focal length of the lens and the fiber's numerical aperture (NA).

For high power applications, special attention is given to the design of the collimator to ensure it can handle the power without damage. This includes the use of air-gap designs in connectors to prevent heat damage, the use of end caps on fibers to reduce power density at the glass/air interface, and the potential use of photonic crystal or "holey" fibers for improved power handling