Fiber coupler allows laser beam to be safely guided from laser output to desired location, which extends the scope of its possible applications. It should be noted, that fiber coupling is not without the disadvantages, such as the increase of the cost of the laser system, lower maximum possible pulse energy and worse beam focusability.
QLI is offering two types of fiber couplers. Compact attachable module is designed for up to 10 mJ input pulse energies, and can be conveniently mounted to the output panel of our lasers.
Stand-alone module, while larger in size, is designed for up to 40 mJ input pulse energy. In addition, stand-alone module can be configured with two output ports (one free-space and one fiber coupler or two fiber coupled) and optional built-in motorized attenuator.
Optional air-purging unit can be used to supply clean air for improved lifetime of fiber coupler optics in dusty environments.

 

Specifications 1)

Attachable fiber coupler:

Model

-FC/UV

-FC/VIS

-FC/NIR

-FC/IR

Wavelength range 2)

260-400 nm

400-700 nm

700-1100 nm

1100-1700 nm

Pulse energy

up to 3 mJ

up to 5 mJ

up to10 mJ

Fiber length 3)

2 m

Fiber numerical

aperture

0.22

Fiber core

diameter 4)

200, 400, 600 µm

200, 400, 600, 900 or 1200 µm

Connector port 5)

SMA / SMA

Fiber core material

UV fused silica

Transmission: 6)

>80% at peak (~70% typical)

Dimensions

60 × 53 × 40 mm3 ( W × H × D)

Stand-alone fiber coupler:

Model

-FCHE/VIS

-FCHE/NIR

Wavelength range

400-700 nm

700-1100 nm

Max input pulse energy

20 mJ

40 mJ

Fiber length 3)

2 m

Fiber numerical aperture

0.22

Fiber core diameter 4)

900, 1000 or 1200 µm

Connector port 5)

SMA / SMA

Fiber core material

UV fused silica

Transmission: 6)

>75% at peak (~70% typical)

Dimensions

160 × 270 × 141 mm3 ( W × H × L)

  1. Due to continuous improvements all specifications are subject to change. The parameters marked typical are not specifications. They are indications of typical performance and will vary with each unit we manufacture.
  2. Customization for 210-2200 nm range is possible. Please inquire for details.
  3. Up to 10 m long fiber cables are available, inquire for detailed specifications.
  4. Other core diameters by request.
  5. Exit beam is uncollimated. Inquire for optional beam collimator.
  6. Transmission for wavelengths below 330 nm depends on laser parameters, typically is in 10-60% range. Please inquire for details. For wavelengths below 330 nm standard fiber length is 1 m.