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31 December 1980 Active Intracavity Alignment System Using A Dynamic Hartmann Sensor Approach
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A novel method using a Dynamic Hartmann Sensor approach is described that allows measurement of the "composite slope" of an optical system as a function of spatial coordinates across its aperture. The technique allows these measurements to be made either in transmission or in reflection (roundtrip). The present technique may be used as a sensor for aligning components of a multi-element optical cavity. One of the important features of this approach is the ability to measure the total error of the measuring system and to subtract instrumentation error automatically from subsequent measurements. Many of the desired features of an electronic interferometer may be incorporated in the system, since the two-dimensional data - spatially correlated with the optical system's aperture to be measured - is available instantaneously in analog or digital format. This latter feature also makes this technique a significant sensor concept for servo control tasks and in real time systems diagnostics. This paper will describe specific applications.
© (1980) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
M. Tarabocchia, S. Holly, and D. Jungwirth "Active Intracavity Alignment System Using A Dynamic Hartmann Sensor Approach", Proc. SPIE 0251, Optical Alignment I, (31 December 1980);


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