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FM Based Long-Wave IR Detection and Imaging at Room Temperature

2 points by westurner 3y ago

westurner 3y ago
"Frequency Modulation Based Long-Wave Infrared Detection and Imaging at Room Temperature" (2023) https://onlinelibrary.wiley.com/doi/10.1002/adfm.202309298 https://onlinelibrary.wiley.com/doi/10.1002/adfm.202309298 : > Abstract: Detection of long wave infrared (LWIR) light at room temperature is a long-standing challenge due to the low energy of photons. A low-cost, high-performance LWIR detector or camera that operates under such conditions is pursued for decades. Currently, all available detectors operate based on amplitude modulation (AM) and are limited in performance by AM noises, including Johnson noise, shot noise, and background fluctuation noise. To address this challenge, a frequency modulation (FM)-based detection technique is introduced, which offers inherent robustness against different types of AM noises. The FM-based approach yields an outstanding room temperature noise equivalent power (NEP), response time, and detectivity (D). This result promises a novel uncooled LWIR detection scheme that is highly sensitive, low-cost, and can be easily integrated with electronic readout circuitry, without the need for complex hybridization.*
westurner 3y ago
"Researcher discovers new technique for photon detection" (2023) https://phys.org/news/2023-12-technique-photon.html https://phys.org/news/2023-12-technique-photon.html : > "Our FM-based approach yields an outstanding room temperature noise equivalent power, response time and detectivity," Chanda says. "This general FM-based photon detection concept can be implemented in any spectral range based on other phase-change materials." > "Our results introduce this novel FM-based detector as a unique platform for creating low-cost, high-efficiency uncooled infrared detectors and imaging systems for various applications such as remote sensing, thermal imaging and medical diagnostics," Chanda says. "We strongly believe that the performance can be further enhanced with proper industry-scale packaging."

2 points by westurner 3y ago

"Frequency Modulation Based Long-Wave Infrared Detection and Imaging at Room Temperature" (2023) https://onlinelibrary.wiley.com/doi/10.1002/adfm.202309298 https://onlinelibrary.wiley.com/doi/10.1002/adfm.202309298 : > Abstract: Detection of long wave infrared (LWIR) light at room temperature is a long-standing challenge due to the low energy of photons. A low-cost, high-performance LWIR detector or camera that operates under such conditions is pursued for decades. Currently, all available detectors operate based on amplitude modulation (AM) and are limited in performance by AM noises, including Johnson noise, shot noise, and background fluctuation noise. To address this challenge, a frequency modulation (FM)-based detection technique is introduced, which offers inherent robustness against different types of AM noises. The FM-based approach yields an outstanding room temperature noise equivalent power (NEP), response time, and detectivity (D). This result promises a novel uncooled LWIR detection scheme that is highly sensitive, low-cost, and can be easily integrated with electronic readout circuitry, without the need for complex hybridization.*

westurner 3y ago

"Researcher discovers new technique for photon detection" (2023) https://phys.org/news/2023-12-technique-photon.html https://phys.org/news/2023-12-technique-photon.html : > "Our FM-based approach yields an outstanding room temperature noise equivalent power, response time and detectivity," Chanda says. "This general FM-based photon detection concept can be implemented in any spectral range based on other phase-change materials." > "Our results introduce this novel FM-based detector as a unique platform for creating low-cost, high-efficiency uncooled infrared detectors and imaging systems for various applications such as remote sensing, thermal imaging and medical diagnostics," Chanda says. "We strongly believe that the performance can be further enhanced with proper industry-scale packaging."