QBH Fiber Adapters for Power Sensors
QBH Fiber Adapters for Power Sensors
QBH fiber adapters are used for mounting fibers with QBH termination to high power sensors L1500W-BB-50, L1500W-LP2-50, 5000W-BB-50 and 5000W-LP2-50. QBH-L Fiber Adapter/ QBH-S Fiber Adapter are suitable for beams with small/large divergence angles respectively.
- Mount fibers with QBH termination to high power sensors
- Compatible with L1500W-BB-50, L1500W-LP2-50, 5000W-BB-50, 5000W-LP2-50
- Suitable for beams with small/large divergence angles See All Features
Features
Measuring beams coming out of a fiber
When you need to measure a beam coming out of a fiber, there are some parameters that might have a somewhat different meaning than they do when referring to "regular" beam measurements. Missing some of these points could lead to incorrect measurement, and possible equipment damage. This video clarifies some issues you'll need to keep in mind so you can set up and perform this measurement correctly.
Frequently Asked Questions
- Why do we have 2 types of QBH fiber adapter?Answer
In order to measure the fiber laser power we need to assure on one hand that the beam size on the absorber is not to small so as to exceed the power density requirements of the absorber and on the other hand that the beam size is not so large that it does not fit into the aperture. This necessitates two lengths of fiber adapter, the QBH-L & QBH-S
The QBH-L (P/N:7Z08348) is suited for beams with divergence angles of up to 120 mrad (for 86% of the beam), the minimum divergence angle depends on total power and the graph in the datasheet should be consulted for exact values.
The QBH-S (P/N:7Z08349) is suited for beams with divergence angles of up to 180 mrad (for 86% of the beam), the minimum divergence angle depends on total power and the graph in the datasheet should be consulted for exact values.
For more information please contact Ophir’s representatives. - Why not measure the fiber Laser in an open space? Why do I need the QBH adapter?Answer
The fiber laser outputs a very high Power and concentrated beam. If any dust or foreign particle gets onto the fiber tip, it can cause a significant damage to your fiber. The enclosure of the QBH adapter excludes foreign particles and also protects the users from back scattered laser light.
- Do I need to recalibrate or add a factor to the Power sensor I already have if I choose to add the fiber adapter?Answer
No, the light scattered from the walls of the adapter that gets back to the sensor absorber is negligible and does not affect calibration.
- What power sensors are recommended to use with the QBH fiber adapters?Answer
For laser powers up to 1500W use the L1500W-LP2-50 (P/N: 7Z02772) sensor or the L1500W-BB-50 (P/N: 7Z02752) sensor.
For laser powers up to 5000W use the 5000W-LP2-50 (a) (P/N: 7Z02773) sensor or the 5000W-BB-50 (P/N: 7Z02754) sensor.
Note: (a) Please note that older versions of the above sensors do not have the requisite 4 threads on Ø70mm circle on their front flange and cannot be used with the QBH adapter
