Compare Model Drawings, CAD & Specs Availability Price
Collimating Beam Probe, Fiber Bundle, 25-150 mm, 1.5 Inch Flange
$998
In Stock
In Stock
Collimating Beam Probe, Fiber Bundle, 70-350 mm, 1.5 Inch Flange
$598
In Stock
In Stock
Collimating Beam Probe, Fiber Bundle 150-650 mm, 2 Inch Flange
$798
In Stock
In Stock
Collimating Beam Probe, Liquid Light Guide 25-40 mm, 1.5 Inch Flange
$398
In Stock
In Stock
Collimating Beam Probe, Liquid Light Guide, 40-50 mm, 1.5 Inch Flange
$635
In Stock
In Stock
Collimating Beam Probe, Fiber Bundle, Fused Silica
$219
2 Weeks
2 Weeks
Collimating Beam Probe, Fiber Bundle, Glass
$198
In Stock
In Stock
Focusing and Imaging Beam Probe, Fiber Bundle, Fused Silica
$255
5 Weeks
5 Weeks

Features

Flange Mounted Collimated Beam Probes

These beam probes can be used with liquid light guides and fiber bundles to produce a large diameter collimated beam size. For applications using a fiber bundle and requiring a collimated beam size of less than 13 mm, the 77644 or 77645 Fiber Bundle Collimated Beam Probe should be used. Flange sizes of 1.5- and 2-in. are offered. The following considerations should be made when choosing a collimating probe:

  • Numerical Aperture of the liquid light guide/fiber bundle
  • Transmission Range of the liquid light guide/fiber bundle
  • Half Angle Divergence, θ/2 of the liquid light guide/fiber bundle
  • Beam Size required – this is dependent on wavelength and the optical design of the collimating probe
  • Typical Collimation Zone – range of distances from the surface of the lens over which beam size and intensity distribution will be most stable

These beam probes accept the standard 11-mm Oriel fiber termination and hold the light guide or bundle in place with a set screw.

Several Mount Options Available

Rod mount and flange mount options are available for these beam probes – please see Mounts for Beam Probes.

Collimated Beam Probes for Fiber Bundles

These beam probes are used to collimate the diverging output from an Oriel fiber bundle. A collimating beam probe should be chosen based on the core material of the fiber bundle being used (standard glass or fused silica). It should be noticed that a well collimated beam cannot be produced from a larger aperture fiber bundle. The smallest divergence angle possible for a perfect optical system is given by: θ = tan-1(d / f), in which θ = full angle diverged, d = fiber bundle diameter and f = lens effective focal length.

Focusing Beam Probes for Fiber Bundles

The 77646 is a focusing beam probe for fused silica fiber bundles. A 19-mm focal length, f/1.7 fused silica collimating lens is included with the probe. The fiber bundle is placed one focal length from this lens to produce a collimated beam. The SPX012 or other 0.5-inch diameter fused silica lens must be purchased separately and installed into the beam probe to create a focused image at a distance that is one focal length of the additional lens. The SPX012 has a focal length of 19 mm. Aside from lens diameter and material, the following should also be considered when choosing a secondary, focusing lens to add to the 77646:

  • Lens Focal Length
  • Working Distance – the distance from the outer edge of the beam probe to the point at which the output focuses, 7 mm less than the focal length of Lens 2
  • Magnification – the ratio of the focal lengths of Lens 2 to Lens 1 (19 mm) Output Beam
  • f/# -this parameter assumes the beam from the fiber bundle fills Lens 1

Note that working distance and magnification can be changed by moving the fiber bundle within the probe.