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60FC-L-4-M50L-01

Fiber Collimator for collimating large beam diameters

60FC-L-4-M50L-01
60FC-L-4-M50L-01
60FC-L-4-M50L-01
60FC-L-4-M50L-01

Features

The fiber collimator is designed for collimating radiation exiting from an optical fiber cable or used in reverse for coupling a beam into an optical fiber cable.
  • Large beam diameters: Focal length 50 mm
  • Optics type: Doublet optics, Achromatic
  • AR-Coating: 400 - 700 nm
  • Working range: 400 - 700 nm
  • Inclined coupling axis, FC-APC connection
  • Front connector accepts attachment optics

Description

The fiber collimators series 60FC-L is designed for collimating radiation exiting optical fiber cables with high pointing stability and large beam diameters. They can also be used in reverse-mode as fiber incouplers. They are suitable for single-mode and polarization-maintaining fiber cables leading to collimated beams with a Gaussian intensity profile. Please note that for multimode collimation the intensity profile is not Gaussian and depends on certain fiber and radiation properties.
The features of the collimator type 60FC-L include:

Optics
The achromat with focal length 50 mm is designed for collimating multiple wavelengths. It is AR-coated for 400 - 700 nm and is suitable for 400 - 700 nm. It is corrected for spherical aberrations and designed in such a way that it leads to a diffraction-limited beam with an M2 < 1.05. Additionally, it is corrected for chromatic aberration so that there are certain wavelengths or wavelength ranges where the focal length does not vary significantly. It is not suitable for UHV applications.

Adjustment of focus
The distance between fiber end-face and collimating optics is adjusted by means of an eccentric key. The lens does not rotate when adjusting the focus. The final focus setting is locked by means of two radially arranged clamping screws. Additionally, attachment optics of series 60FC-L can be mounted to the front of the collimator.

Optimum lens performance
The angled polish of connectors of type APC is considered by a pre-angled mechanical coupling axis that compensates the beam deflection and you can use the lens centrically. This minimizes aberrations simply resulting from a non-ideal beam path through the lens.

Connector Type
The fiber collimator is equipped with a FC-APC type receptacle. Because of the spring-loaded fiber ferrule the fiber collimator has an additional grub screw to increase pointing stability.

Material
The fiber collimator type 60FC-L is made from nickel silver/aluminium (standard)

Mounting
The collimators series 60FC-L all possess a flange for low-strain mounting e.g. using the clamp collars series CC.