Abstract
An 8-element infrared radiation detector array of YBCO superconducting thin films has been manufactured. The films were deposited by excimer laser scanning ablation and were patterned by ion beam milling. The photoresponse of the detector array employing the critical current-temperature relation were investigated in the range of 8–14 μm. The array has an uniform photoresponse and a flat photoresponse-operating temperature curve when it operates below T c. The average normalized detectivity ( D ∗ ) of the array is 2.46 × 10 9 cm Hz 1 2 W −1 and the average noise equivalent power ( NEP ) is 1.822 × 10 −12 W Hz − 1 2 .
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