MIRcat OPERATION
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Figure 6. Typical CW (average) power output versus QCL drive current recorded at three different
wavelengths for CW operation of a Daylight external cavity quantum cascade laser (ECqcL).
Figure 7. Typical tuning curve for an example MIRcat configuration of four pulsed QCL lasers.
User control of the MIRcat laser system is via a user-supplied computer running a GUI or SDK command set,
both of which are included as standard with each MIRcat system. Using these interfaces, MIRcat users can
control: wavelength set-points; scans; power; triggering (and pulse width, duty cycle, and repetition rate in
pulsed operation). Information stored in an EEPROM in the MIRcat laser head prevents the user from
attempting to tune the module beyond the laser’s range, or applying incorrect drive currents to the QCLs in
