Portal de Periódicos da CAPES

32 × 32 Geiger-mode ladar camera

2010; SPIE; Volume: 7684; Linguagem: Inglês

10.1117/12.851525

1996-756X

Ping Yuan, R. Sudharsanan, Xiaogang Bai, Joseph Boisvert, Paul C. McDonald, Eduardo Labios, Michael S. Salisbury, Gary M. Stuart, Harrison Danny, Angel Portillo, Alric B. Roybal, Stephen Van Duyne, Greg Pauls, Stephen D. Gaalema,

Radiation Detection and Scintillator Technologies

For the wide applications of LAser Detection and Ranging (LADAR) imaging with large format Geiger-mode (GM) avalanche photodiode (APD) arrays, it is critical and challenging to develop a LADAR camera suitable to volume production with enough component tolerance and stable performance. Recently Spectrolab and Black Forest Engineering developed a new 32x32 Read-Out Integrated Circuit (ROIC) for LADAR applications. With a specially designed high voltage input protection circuit, the ROIC can work properly even with more than 1 % of pixels shorted in the APD array; this feature will greatly improve the camera long-term stability and manufacturing throughput. The Non-uniform Bias circuit provides bias voltage tunability over a 2.5 V range individually for each pixel and greatly reduces the impact of the non-uniformity of an APD array. A SMIA high speed serial digital interface streamlines data download and supports frame rates up to 30 kHz. The ROIC can operate with a 0.5 ns time resolution without vernier bits; 14 bits of dynamic range provides 8 μs of range gate width. At the meeting we will demonstrate more performance of this newly developed 32x32 Geiger-mode LADAR camera.