NKT Photonics SUPERK SELECT - Monitor Ports; Figure 6 Optical Interfaces

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Monitor ports Monitor ports are located on the side panels of the SELECT as shown in Figure 5

The ports and connectors shown in the figure are optionally fitted with power

monitors before leaving the factory. The power monitors receive a fraction of the

VIS/NIR and NIR/IR output beams. The power monitors use a detector which the

SELECT uses to compose a signal that represents the output pulses.

Feedback power locking

The monitor signal is transmitted from the Monitor Output BNC port which is fed

to the external feedback port of a SuperK laser. This sets up a feedback loop that

stabilizes the laser emission power level.

The system only allows one output monitor signal to be transmitted from the

monitor port. Therefore a feedback loop can only be configured for a single

AOTF output (configured in CONTROL) “Power monitor selector” on page 48

Figure 6 Optical Interfaces

1. VIS/NIR optical monitor aperture 3. VIS/NIR power monitor connector

2. NIR/IR optical monitor aperture 4. NIR/IR power monitor connector

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