Recent charge-coupled device optimization results at Steward Observatory

Research output: Chapter in Book/Report/Conference proceedingConference contribution


Recent research efforts aimed at optimizing charge-coupled devices (CCDs) after their manufacture to achieve maximum quantum efficiency, wide spectral bandpass, and excellent cosmetics and surface flatness are discussed. We present results of a new acid thinning agitation technique which produces very uniform, high quality surfaces on large area square and rectangular CCDs and 4' silicon wafers for back illuminated operation. In particular we present thinning results of Ford Aerospace 2048×2048 pixel CCDs. A method of cleaning thinned CCDs before antireflection coating for increased QE is also discussed. The results of initial experiments with a new packaging method to mount thinned CCDs while maintaining a very flat imaging surface are presented. This bump bonding mounting technique increases yield due to reduced handling and robust packaging and is expandable to tightly packed large area focal plane mosaics.

Original languageEnglish (US)
Title of host publicationProceedings of SPIE - The International Society for Optical Engineering
EditorsDavid L. Crawford
PublisherPubl by Int Soc for Optical Engineering
Number of pages6
Volume1235 pt 1
ISBN (Print)0819402796
Publication statusPublished - 1990
EventInstrumentation in Astronomy VII - Tucson, AZ, USA
Duration: Feb 13 1990Feb 17 1990


OtherInstrumentation in Astronomy VII
CityTucson, AZ, USA


ASJC Scopus subject areas

  • Electrical and Electronic Engineering
  • Condensed Matter Physics

Cite this

Lesser, M. P. (1990). Recent charge-coupled device optimization results at Steward Observatory. In D. L. Crawford (Ed.), Proceedings of SPIE - The International Society for Optical Engineering (Vol. 1235 pt 1, pp. 236-241). Publ by Int Soc for Optical Engineering.