Arrays of 128x32 InP-based Geiger-mode avalanche photodiodes

• Main Authors: Brattain, Michael A. (Contributor), Oakley, Douglas C. (Contributor), Chapman, David C. (Contributor), Mahan, Joseph M. (Contributor), Smith, Gary M. (Contributor), Mahoney, Leonard J. (Contributor), Younger, Richard D. (Contributor), Funk, Joseph E. (Contributor), Donnelly, Joseph P. (Contributor), Shelton, John D. (Contributor), Liau, Zong-Long (Contributor), McIntosh, K. Alexander (Contributor), Verghese, Simon (Contributor)
• Other Authors: Lincoln Laboratory (Contributor)
• Format: Article
• Language: English
• Published: The International Society for Optical Engineering, 2010-03-18T14:31:55Z.
• Subjects: Article
• Online Access: Get fulltext

Arrays of InP-based avalanche photodiodes operating at 1.06-µm wavelength in the Geiger mode have been fabricated in the 128x32 format. The arrays have been hermetically packaged with precision-aligned lenslet arrays, bump-bonded read-out integrated circuits, and thermoelectric coolers. With the array cooled to -20C and voltage biased so that optical cross-talk is small, the median photon detection efficiency is 23-25% and the median dark count rate is 2 kHz. With slightly higher voltage overbias, optical cross-talk increases but the photon detection efficiency increases to almost 30%. These values of photon detection efficiency include the optical coupling losses of the microlens array and package window.