116
Apr-09
Avantes
www.avantes.com
5.5.3
Vacuum feed through
The FC-VFT vacuum feed troughs are designed for use of fiber optics in vacuum chambers, such as
for plasma monitoring. The vacuum feed through consists of an M12 housing with Viton
®
O-ring and
needs 2 extra SMA fiber optic interconnects to allow easily coupling to fiber optic cables and probes.
The vacuum feed through can be delivered for all fiber diameters, such as 50µm, 100µm, 200µm,
400µm, 600µm, 800µm and 1000µm for UV/VIS as well as for VIS/NIR.
Technical Data
Fibers
1 fiber, diameter 50 /100/200/ 400/600/800/1000µm
Wavelength range
200-800 nm (UV/VIS) or 350-1100 (VIS/NIR)
Connectors
Standard SMA905 connectors (2x)
Wall thickness of vacuum chamber
5-40 mm
Vacuum
Max. 10
-7
mbar
Temperature
-40 ºC to 100 ºC. (High Temperatures available on request)
5.5.4
Fiber optic interconnect
The ME-FI-SM-MM fiber interconnect and ME-SM-BC are accessories for SMA-terminated optical fibers.
Each connector consists of ¼"-36 outside-thread female adapter for easy connection to any SMA-
terminated optical fiber. The ME-FI-SM-MM fiber interconnect may be useful for coupling patch cords
to fiber optic probes and other devices, or for any multiple-fiber application where coupling of
standard optical fibers and accessories is preferable to creating costly and complex fiber optic
assemblies.
5.5.5
Reflection probe Holder
The Reflection probe holder is to fix a FCR standard reflection probe under an angle of 90 or 45
degrees, the holes have a 6,5 mm diameter and contain a setscrew to fix the probe in its position.
The RPH measures 60 x 30 x 30 mm.
The reflection probe holder was developed for 2 types of reflection, specular and diffuse:
1.
Specular reflection: Put the probe in the 90° aperture, adjust the distance from the
measurement surface and tighten the setscrew with the 1.5 mm Allyn Wrench. Connect the 6-
fiber leg to the light source and the read fiber to the spectrometer.
2.
Diffuse reflection (for color measurements) : Put the probe in the 45° aperture, adjust the
distance from the measurement surface and tighten the setscrew with the 1.5 mm Allyn Wrench.
Connect the 6-fiber leg to the light source and the read fiber to the spectrometer.
