Photoresponse of a miniaturized metal film bolometer to ultrashort mid- and far-infrared laser pulses |
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| Affiliation: | 1. MPI für Plasmaphysik, W-8046 Garching, Germany;2. Institut für Angewandte Physik, Universität Regensburg, W-8400 Regensburg, Germany;1. State Key Laboratory of Hydraulics and Mountain River Engineering, College of Architecture and Environment, Sichuan University, Chengdu 610065, China;2. Sino-German Centre for Water and Health Research, Sichuan University, Chengdu 610065, China;3. Nanjing Institute of Testing and Measurement Technology, Nanjing 210049, China;4. Water Safety and Water Pollution Control Engineering Technology Research Center in Sichuan Province, Haitian Water Group, China;5. Institute of Environmental Engineering, RWTH Aachen University, Germany;1. China Electronics Technology Group Corporation No.58 Research Institute, Wuxi 214035, China;2. College of IoT Engineering, Hohai University, Changzhou 213022, China;3. College of Mechanical & Electrical Engineering, Hohai University, Changzhou 213022, China;1. Department of Computer Science, Faculty of Science Engineering, Bindura University of Science Education, Bindura, 0771 603 900, Zimbabwe;2. School of Mathematics, Statistics, and Computer Science, University of KwaZulu-Natal, Pietermaritzburg Campus, Pietermaritzburg, 3201, South Africa;3. Unit for Data Science and Computing, North-West University, 11 Hoffman Street, Potchefstroom, 2520, South Africa;1. Department of Pathology and Microbiology, College of Medicine, University of Ha''il, Ha''il, 55476, Saudi Arabia;2. Department of Internal Medicine, College of Medicine, University of Ha''il, Ha''il, 55476, Saudi Arabia;3. Department of Dermatology, College of Medicine, University of Ha''il, Ha''il, 55476, Saudi Arabia;4. Department of Internal Medicine, College of Medicine at University of Ha''il, Ha''il, 2440, Saudi Arabia;5. Department of Information and Computer Science, College of Computer Science and Engineering, University of Ha''il, Ha''il, 81481, Saudi Arabia;6. Department of Agriculture, Food and Nutritional Sciences, University of Alberta, Edmonton, AB, T6G 2P5, Canada;7. School of Biosciences, Apeejay Stya University, Sohna, Gurugram, 122003, India;8. Department of Environmental Science, Jamia Millia Islamia (Central University), New Delhi, 110025, India;9. Department of Biochemistry, College of Medicine, University of Ha''il, Ha''il, 2440, Saudi Arabia |
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| Abstract: | We report on an investigation of a photoresponse induced in a novel, miniaturized low-noise metal resistor film bolometer when irradiated by ultrashort laser pulses (duration 100 ps to 200 ns) with wavelengths covering the mid- and far-infrared spectral ranges. Successful operation at room temperature was achieved and almost constant detectivity was found over the whole frequency range investigated (15–1100 cm−1). The minimum detectable laser pulse energy was determined to be about 0.6 μ J (with an electronic bandwidth of 1 kHz). This high detectivity and the miniaturized dimensions afford the possibility of building detector arrays applicable in mid- and far-infrared spectroscopy. |
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