The MPIDS Holographic system
The holographic system, built by Dr. Freja Nordsiek, Dr.
Oliver Schlenczek, and the MPIDS Machine Shop team. The system consists
of a frame with two arms that goes into the Instrument Box of the
CloudKite towards
the front with the arms protruding from the sides. The pulses from
the 355 nm near-UV laser on the lower arm are optionally spatial
filtered, expanded, collimated, and steered to the end of the arm
where they are turned upward into the view volume. On the other
side of the view volume, the resulting holograms are bandpass filtered,
directed towards the camera, magnified, and imaged by the camera.
The holographic system can image cloud particles as small as 6 microns
in diameter in a 54 cm3 volume at frame rates up to 80 fps for at
least 30 minutes at a time.
