Title :
The development of a cryogenic optical delay line for DARWIN
Author :
van den Dool, T.C. ; Kamphues, F.
Author_Institution :
TNO Sci. & Ind., Delft, Netherlands
Abstract :
The assembly and integration of the breadboard cryogenic optical delay line has been completed. The measured optical path difference stability is 1.3 nm rms on a test bench with 23 μm rms vibration level (the test bench has a much higher disturbance spectrum than the DARWIN spacecraft). A full verification test program is currently being carried out by Alcatel Space and SAGEIS-CSO, including thermal vacuum testing at 40 K.
Keywords :
aerospace instrumentation; interferometry; low-temperature techniques; optical delay lines; optical instruments; space vehicles; 40 K; Alcatel Space; DARWIN spacecraft; SAGEIS-CSO; breadboard cryogenic optical delay line; optical path difference stability; thermal vacuum testing; vibration level; Adaptive optics; Cryogenics; Delay lines; Magnetic levitation; Mirrors; Optical distortion; Optical interferometry; Power dissipation; Stability; Testing;
Conference_Titel :
MEMS, NANO and Smart Systems, 2005. Proceedings. 2005 International Conference on
Print_ISBN :
0-7695-2398-6
DOI :
10.1109/ICMENS.2005.118
