Abstract
Optical detectors based on YBa2Cu3O7-δ thin films have been fabricated, which show a response time of a few ns. Typical dimensions of the active area are 10×10 μm2. No preamplifier is needed during operation. The authors report on the optical response of detectors having nongranular and fine-grain morphologies to different sources of pulsed laser radiation (e.g., mode-locked Nd:YLF laser at 1.3 μm and a GaAs diode laser at 0.9 μm). Emphasis in the study is placed on detection sensitivity for measuring short optical pulses. It is found that the best noise obtained with a fine-grain detector is on the order of 10-10 W/Hz1/2, when irradiated by the 65ns-pulse-width diode laser.
Original language | English |
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Pages (from-to) | 2864-2868 |
Number of pages | 5 |
Journal | IEEE transactions on applied superconductivity |
Volume | 3 |
Issue number | 1 |
DOIs | |
Publication status | Published - 1993 |
Event | 1992 Applied Superconductivity Conference, ASC 1992 - Chicago, United States Duration: 23 Aug 1992 → 28 Aug 1992 |