Due to an reflector engulfing the lamp, the setup has very good efficiency. Up to 70% of emitted radiation is captured by the reflector and directed at an illuminated sample.
The unit provides also three types of stabilization: electric current, electric power and light intensity stabilization. The light intensity stabilization mode helps the long term (order of hours) stability of the output beam. It also reduces the warm up time to about 3 minutes as compared with
30 minutes or longer with current stabilization.
The plot shows the difference in light intensity evolution in two available stabilization modes. The current in the current stabilization regime is kept constant with about 0.0025 % accuracy. Despite
of that, the light intesity changes significantly over time (black line) due to temperature and pressure changes within the xenon bulb.
The light intensity stabilization eliminates the long term drift
in the light output and makes it stable just 3 minutes after the lamp is switched on.