PISTIL interferometry (PISton and TILt interferometry), dedicated to the measurement of regular segmented wave surfaces such as segmented mirrors or the near-field output of coherent combined lasers, consists on making replicas of the central part of the wavefronts of each surface segment interfere with its nearest neighbors. The resulting interference pattern is made of an apposition of surfaces containing two-wave interference whose phase, frequency and orientation provide direct information on the respective heights and tilts of the segments in relation to each other. This technique has evolved into a new device called Full Light PISTIL. More compact and more efficient, this new version overcomes the drawbacks of previous PISTIL interferometer version by taking into account the whole surface of the incident wavefront. The performance obtained, estimated on a segmented mirror, is state of the art, and points the way towards a plug and play product adapted to the specific measurement needs of these surfaces, even in low light conditions.
Access to the requested content is limited to institutions that have purchased or subscribe to SPIE eBooks.
You are receiving this notice because your organization may not have SPIE eBooks access.*
*Shibboleth/Open Athens users─please
sign in
to access your institution's subscriptions.
To obtain this item, you may purchase the complete book in print or electronic format on
SPIE.org.
INSTITUTIONAL Select your institution to access the SPIE Digital Library.
PERSONAL Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.