Features

• For Singlemode and Polarization Maintaining Fibers
• Gaussian beam at any distance
• Wavefront error <1/10 wave
• 5mm, 10mm, 20mm, 45mm apertures
• Adjustable focus/collimation
• 370nm to 2000nm
• Excellent for high power lasers and fiber lasers

New! 2mm coating
New! FC40 with 23mm beam

For many applications, a pure gaussian beam is required. Our FC Series of collimators are designed specifically for singlemode fiber, polarization maintaining fiber and fiber laser applications which can generate a pure Gaussian beam. Available from 5mm to 45mm aperture sizes, the output is very clean with no diffraction patterns or beam distortions which are typically found in most fiber collimators. Output stays as a Gaussian shape no matter what the distance. Collimators have an FC or FC/APC receptacle input. Output is adjustable so that you can tune the collimator for best collimation at the wavelength you are using and then lock it down.

Three wavelength regions cover from 375nm to 2000nm. A new coating covers the 2mm region. These collimators can be used with diode lasers, Ar, YAG, Ti-Saphire, HeNe, DPSS, Fiber Lasers and many others.

The FC Series fiber collimators can be used with our Fermion I, II or III Series Turnkey fiber instrument lasers or our SRT-F OEM Series of fiber coupled diode lasers or other commercially available lasers. An important factor with fiber coupled lasers and collimators is the fiber used. The quality of the fiber plays a big role in how well the laser or collimataor performs. We manufacture a line of optical fiber, both singlemode and polarization maintaining, for all wavelengths that is optimized for these collimators.

Specifications

New! 80 pitch adjustment threads on FC5 and FC10 collimators.

Characteristics	FC5	FC10	FC20	New FC40	FC45
Aperture:	6mm	10mm	23mm	46mm	46mm
Beam Size (1/e^2, NA=.13)	2.1mm	5.5mm	10mm	23mm	35mm
Beam Divergence:	<0.5mrad	<0.25mrad	<0.1mrad	<0.06mrad	<0.05mrad
Collimation:	Adjustable and lockable			Adjustable with no rotation and lockable
Wavefront Error:	<1/10 wave
Input Receptacle:	FC or FC/APC
Optical path:	Epoxy free
Housing:	Stainless Steel

Please note: SMF28 fiber will give a smaller beam size due to to smaller NA at 1/e^2 points. Corning states the NA at 1% level, not 1/e^2 points.

Ordering Information
All collimators are stocked for immediate delivery. Call for FC40 and FC45 lead time.
All beam sizes are measured at 1/e^2 points. Beam sizes will vary depending on the NA of your fiber.

Model #	Description
FC5-l-T	~2mm Beam. FC receptacle.
FC5-l-T/A	~2mm Beam. FC/APC receptacle.
FC10-l-T	~5mm Beam. FC receptacle.
FC10-l-T/A	~5mm Beam. FC/APC receptacle.
FC20-l-T	~10mm Beam. FC receptacle.
FC20-l-T/A	~10mm Beam. FC/APC receptacle.
FC40-l-T	~23mm Beam. FC receptacle.
FC40-l-T/A	~23mm Beam. FC/APC receptacle.
FC45-l-T	~40mm Beam. FC receptacle.
FC45-l-T/A	~40mm Beam. FC/APC receptacle.
FC5R-1.0	Adapter ring for 1 inch optical mounts for FC5.
FC10R-1.0	Adapter ring for 1 inch optical mounts for FC10.
FC20R-2.0	Adapter ring for 2 inch optical mounts for FC20.
FC45M	Adapeter to mount FC40 and FC45 to optical tables and tripods.

Insert -VIS for l = 370nm to 600nm
Insert -NIR for l = 600nm to 1000nm
Insert -IR for l = 1000nm to 1700nm
Please call for the collimator that works in the 2mm region.

Using SMF28 fiber will result in a smaller beam diameter from that stated above. Please call for more information.

Call for SMA receptacles for the above collimators.

Custom Collimators
Special beam sizes, fixed or pigtailed collimators are manufactured on a custom basis. Collimators for flight systems, space systems, non-magnetic, radiation resistant and vacuum compatible versions have been made on a custom basis. Special materials, such as Titanium, aluminum, have been manufactured.

Please give us a call at 714-898-6001 for your special requirements.

Dimensions