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| Content Provider | IEEE Xplore Digital Library |
|---|---|
| Author | Shinho Cho Cheon Lee |
| Copyright Year | 2002 |
| Abstract | The modulation in the resonant frequency of superconducting passive devices fabricated with YBa/sub 2/Cu/sub 3/O/sub 7-x/ (YBCO) thin films has been investigated as a function of temperature and optical pulse energy. The frequency-domain measurements are performed in a closed-cycle refrigerator in a temperature range of 20 to 80 K. The optical excitation consists of a 70 psec laser pulse train at 532 nm from an actively mode-locked Nd:YAG laser. The measured optical pulse energy dependence of the resonant frequency is described by f=f/sub p0/|1-a(P/P/sub c/)/sup 2/| where P/sub c/ is the critical optical pulse energy beyond which resonance has disappeared. As for the dependence on temperature, the resonant frequency can be expressed by f=f/sub T0/|1+2/spl lambda/coth(t//spl lambda/)/d|/sup -1/2/ where the magnetic penetration depth is given by a quadratic dependence on temperature, /spl lambda/=/spl lambda//sub 0/|1-(T/T/sub c/)/sup 2/|/sup -1/2/. |
| Sponsorship | Council on Superconductivity Appl. Superconductivity Conference Inc MIT |
| Starting Page | 2943 |
| Ending Page | 2946 |
| Page Count | 4 |
| File Size | 418639 |
| File Format | |
| ISSN | 10518223 |
| Volume Number | 9 |
| Issue Number | 2 |
| Language | English |
| Publisher | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Publisher Date | 1999-06-01 |
| Publisher Place | U.S.A. |
| Access Restriction | One Nation One Subscription (ONOS) |
| Rights Holder | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Subject Keyword | Optical tuning Resonant frequency Yttrium barium copper oxide Optical pulses Pulse measurements Optical films Frequency measurement Laser mode locking Magnetic resonance Temperature dependence |
| Content Type | Text |
| Resource Type | Article |
| Subject | Condensed Matter Physics Electronic, Optical and Magnetic Materials Electrical and Electronic Engineering |
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