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Infrared Detectors for WFC3 on the Hubble Space Telescope M. Robberto1,#, S. Baggett1, C. Hanley1, B. Hilbert1, J. MacKenty1, E. S. Cheng2, R. J. Hill2, S. D. Johnson2,%, E. M. Malumuth2, &, E. Polidan2, %, A. Waczynski2, %, Y. Wen2,&, A. Haas3, J. T. Montroy3, E. Piquette3, K. Vural3, C. Cabelli3, and D. N. B. Hall4 1
Space Telescope Science Institute, 3700 San Martin Dr., Baltimore, MD 21218 2 NASA/Goddard Space Flight Center, Greenbelt, MD 20771 3 Rockwell Scientific Company, 5212 Verdugo Way, Camarillo, CA 93012 4 University of Hawaii, Institute for Astronomy, 640 N. Aohoku Place, Hilo, HI 96720
ABSTRACT Rockwell Scientific Company is developing a new type of HgCdTe 1K×1K detector, called WFC3-1R, with cutoff wavelength at 1.7µm and 150K operating temperature. The detector will be installed on the Wide Field Camera 3, the fourth generation panchromatic instrument for the Hubble Space Telescope (HST) to be installed during HST Servicing Mission 4, currently scheduled for 2004. The detector uses HgCdTe MBE grown on a CdZnTe substrate and a new type of multiplexer, the Hawaii-1R MUX. Six lots of detectors have been produced so far, and have demonstrated the capability to meet or exceed the project requirements. In particular, detectors show quantum efficiency as high as ~90% at λ=1.4-1.6µm and greater than 50% at λ>1.0µm, readout noise of 30 e- rms with double correlated sampling, and dark current
