Measurement of the radiometric and polarization characteristics of a microgrid polarizer infrared focal plane array

Hubbs, John E.; Gramer, Mark E.; Maestas-Jepson, Diana; Dole, Gary A.; Fetrow, Matthew P.; Bowers, David L.; Boger, James K.

doi:10.1117/12.685468

Cited by 13 publications

(7 citation statements)

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“…For more specific characterization details regarding the PIRATE sensor we refer the interested reader to work presented in previous publications. 11,13,14 We apply the SBNUC algorithm by first setting the block size (we use P = 50 frames). Then, rather than dividing the image sequence into discrete blocks we instead compute the mean-square-error (MSE) between adjacent image frames.…”

Section: Application and Discussionmentioning

confidence: 99%

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Adaptive scene-based correction algorithm for removal of residual fixed pattern noise in microgrid image data

Ratliff

LeMaster

2012

SPIE Proceedings

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Pixel-to-pixel response nonuniformity is a common problem that affects nearly all focal plane array sensors. This results in a frame-to-frame fixed pattern noise (FPN) that causes an overall degradation in collected data. FPN is often compensated for through the use of blackbody calibration procedures; however, FPN is a particularly challenging problem because the detector responsivities drift relative to one another in time, requiring that the sensor be recalibrated periodically. The calibration process is obstructive to sensor operation and is therefore only performed at discrete intervals in time. Thus, any drift that occurs between calibrations (along with error in the calibration sources themselves) causes varying levels of residual calibration error to be present in the data at all times. Polarimetric microgrid sensors are particularly sensitive to FPN due to the spatial differencing involved in estimating the Stokes vector images. While many techniques exist in the literature to estimate FPN for conventional video sensors, few have been proposed to address the problem in microgrid imaging sensors. Here we present a scene-based nonuniformity correction technique for microgrid sensors that is able to reduce residual fixed pattern noise while preserving radiometry under a wide range of conditions. The algorithm requires a low number of temporal data samples to estimate the spatial nonuniformity and is computationally efficient. We demonstrate the algorithm's performance using real data from the AFRL PIRATE and University of Arizona LWIR microgrid sensors.

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Section: Application and Discussionmentioning

confidence: 99%

“…Hence, the mean gain ratio estimates are computed according toγ (ḿ,ń) = 1 P − 2 P σ P − P σ p= P σ γ(ḿ,ń, p). (14) At this point the mean gain ratio estimates are of the form…”

Section: Algorithm Corementioning

confidence: 99%

Adaptive scene-based correction algorithm for removal of residual fixed pattern noise in microgrid image data

Ratliff

LeMaster

2012

SPIE Proceedings

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“…In comparison, previously reported PERs for integrated long‐wave infrared polarization detection were lower than 10. [ 122 ] There is no doubt that the plasmonic cavity integrated polarization QWIP is a significant progress in the field of infrared polarization recognition.…”

Section: Photonic Structures For Polarization Discrimination Enhancementmentioning

confidence: 99%

Integrated Photonic Structure Enhanced Infrared Photodetectors

Jiang

Shi

Zhou

et al. 2021

Advanced Photonics Research

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The application fields of infrared photodetectors are quite extensive. Compared with traditional infrared photodetection materials such as IV and III–V semiconductors, newly emerging low‐dimensional materials and quantum materials (e.g., 2D materials and quantum wells) have many advantages in different aspects, such as wide spectral range, low dark current, room temperature operation, and high processing compatibility. However, the performance of photodetectors based on low‐dimensional materials is limited by the ultra small thicknesses, polarization selectivity, and the poor absorption efficiency. Therefore, improving the performance of infrared photodetectors based on low‐dimensional materials has been a focus research task in recent years. The integration of photonic structures can improve the performance of infrared photodetectors, such as enhancing absorption efficiency, reducing the volume of active materials, and increasing polarization selectivity. Herein, different kinds of photonic structure integrated infrared photodetectors, roughly divided into two categories, namely, dielectric photonic structure integrated ones and metallic photonic structure integrated ones, are reviewed. The active materials include 2D materials, quantum wells, quantum dots, and carbon nanotubes.

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“…have fabricated a grating with the PER exceeding 10 4 at the visible and near-infrared light (500–800 nm), the depth-to-width ratio of the grating exceeds 4:1, which is vulnerable and needs complex fabrication processes . Moreover, due to light diffraction, the PER of focal plane integrated grating is only 33 at short-wave infrared and even less than 10 at long-wave infrared . The metasurface based on the principle of phase control will be affected by many aspects such as focusing efficiency, numerical aperture, incident spot size and angle, and so forth.…”

Section: Introductionmentioning

confidence: 99%

“…19 Moreover, due to light diffraction, the PER of focal plane integrated grating is only 33 at short-wave infrared 20 and even less than 10 at long-wave infrared. 21 The metasurface based on the principle of phase control will be affected by many aspects such as focusing efficiency, numerical aperture, incident spot size and angle, and so forth. Therefore, the currently reported PER is only 25 in mid-infrared in the experiment 22,23 to our best knowledge.…”

Section: ■ Introductionmentioning

confidence: 99%

Metainterface and Application for High-Performance Spectro-Polarimetric Filter

Liu

Xie

et al. 2022

ACS Photonics

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Metasurface attracts much attention but lacks the modulation ability along the beam propagation direction, which confines its ability to control the wavelength and polarization of light. We propose a new concept of metainterface by embedding a two-dimensional metamaterial in a layered structure with vertical control ability. It can hugely improve the light control power and generate excellent characteristics while keeping simple fabrication processes. A high-performance spectro-polarimetric filter, which is based on the interface composed of one-dimensional photonic crystals and 10 nm thick Al grating, is fabricated for demonstration. Experimental results show that it can simultaneously have a polarization extinction ratio (PER) of 800 and a spectral resolution power (SRP, λ/Δλ) of 113, which are, respectively, 74 and 9 times better than the recently obtained best results of the metasurface. Moreover, it can break the limitation of diffraction and achieve much higher PER with limited size gratings. Because of these characteristics, it has great potential in miniature and integrated spectropolarimeters.

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Measurement of the radiometric and polarization characteristics of a microgrid polarizer infrared focal plane array

Cited by 13 publications

References 0 publications

Adaptive scene-based correction algorithm for removal of residual fixed pattern noise in microgrid image data

Adaptive scene-based correction algorithm for removal of residual fixed pattern noise in microgrid image data

Integrated Photonic Structure Enhanced Infrared Photodetectors

Metainterface and Application for High-Performance Spectro-Polarimetric Filter

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