The design of an alignment-detection system that uses off-axis diffractive elements and photodetectors is presented. The system was developed to detect the real-time misalignment of an array of optical beams as they pass through a microchannel relay. The design of this scheme is presented along with experimental results obtained from a prototype detection system.
© 1998 Optical Society of America
Original Manuscript: September 17, 1997
Revised Manuscript: April 8, 1998
Published: August 10, 1998
Brian Robertson, David Kabal, Guillaume C. Boisset, Yongsheng Liu, William M. Robertson, Mohammad R. Taghizadeh, and David V. Plant, "Design and operation of an in situ microchannel alignment-detection system," Appl. Opt. 37, 5368-5376 (1998)