QWIP focal plane arrays on InP substrates for single and dual band thermal imagers

Eker, S. U.
Arslan, Y.
Kaldirim, M.
Beşikci, Cengiz
Alternative material systems on InP substrate provide certain advantages for mid-wavelength infrared (MWIR), long-wavelength infrared (LWIR) and dual band MWIR/LWIR quantum well infrared photodetector (QWIP) focal plane arrays (FPAs). While InP/InGaAs and InP/InGaAsP LWIR QWIPs provide much higher responsivity, when compared to the AlGaAs/CaAs QWIPs, AllnAs/InGaAs system facilitates completely lattice matched single band MWIR and dual band MWIR/LWIR FPAs.


Assessment of large format InP/InGaAs quantum well infrared photodetector focal plane array
Ozer, S; Cellek, OO; Beşikci, Cengiz (Elsevier BV, 2005-10-01)
We report the fabrication and characteristics of large format (640 x 512) InP/In0.53Ga0.47As long wavelength infrared (LWIR) quantum well infrared photodetector (QWIP) focal plane array (FPA). The FPA, which is hybridized to a read-out integrated circuit having a charge capacity of 1.1 x 10(7) electrons, yielded a mean noise equivalent temperature difference (NETD) of similar to 40 mK at a cold finger temperature as high as 77 K. The performance of the FPA, being comparable to that of AlGaAs/GaAs QWIP FPAs,...
Lattice-matched AlInAs-InGaAs mid-wavelength infrared QWIPs: characteristics and focal plane array performance
Kaldirim, M.; Arslan, Y.; Eker, S. U.; Beşikci, Cengiz (IOP Publishing, 2008-08-01)
The AlInAs/InGaAs material system is promising for mid-wavelength infrared (MWIR) and multi-band quantum well infrared photodetectors (QWIPs) as a lattice-matched alternative to the strained AlGaAs/InGaAs system. In this paper, we report a large format (640 x 512) AlInAs/InGaAs QWIP focal plane array (FPA) with 4.9 mu m cut-off wavelength and assess the performance of this material system for MWIR QWIP applications at both pixel and large format FPA level. We also experimentally demonstrate that the cut-off...
Optical constants of silver and copper indium ternary sulfides from infrared reflectivity measurements
Hasanlı, Nızamı (Elsevier BV, 2016-03-01)
Infrared reflection spectra are obtained in the frequency range of 50-2000 cm(-1) for AgIn5S8 and CuIn5S8 single crystals grown by Bridgman method. All four infrared-active modes are detected, which are in full agreement with the prediction of group-theoretical analysis. Spectral dependence of optical parameters; real and imaginary parts of the dielectric function, the function of energy losses, refractive index, absorption index and absorption coefficient were calculated from reflectivity experiments. The ...
Turkmen, Oznur; Sayan, Gönül; Ziolkowski, Richard W. (Wiley, 2014-01-01)
The design and performance characteristics of metamaterial-inspired electrically small, single, dual and triple band antennas at the GSM (1.93-1.99 GHz), ISM (2.43-2.4835 GHz), and WiMAX (3.3-3.6 GHz) frequencies are reported. These antennas are based on a coaxially fed printed dipole integrated in a planar configuration with capacitively loaded loops (CLLs) as its near-field resonant parasitic radiators. In the proposed topology, the number of operating frequencies is determined by the number of CLLs. Thes...
High responsivity InP-InGaAs quantum-well infrared photodetectors: Characteristics and focal plane array performance
Cellek, OO; Ozer, S; Beşikci, Cengiz (Institute of Electrical and Electronics Engineers (IEEE), 2005-07-01)
We report the detailed characteristics of long-wavelength infrared InP-In0.53Ga0.47As quantum-well infrared photodetectors (QWIPs) and 640 x 512 focal plane array (FPA) grown by molecular beam epitaxy. For reliable assessment of the detector performance, characterization was performed on test detectors of the same size and structure with the FPA pixels. Al0.27Ga0.73As-GaAs QWIPs with similar spectral response (lambda(p) = similar to 7.8 mu m) were also fabricated and characterized for comparison. InP-InGaAs...
Citation Formats
S. U. Eker, Y. Arslan, M. Kaldirim, and C. Beşikci, “QWIP focal plane arrays on InP substrates for single and dual band thermal imagers,” INFRARED PHYSICS & TECHNOLOGY, pp. 385–390, 2009, Accessed: 00, 2020. [Online]. Available: https://hdl.handle.net/11511/47091.