Nonintrusive Photoacoustic Characterization of Critical Properties in High Tc Superconducting Materials. Phase 1

摘要

The objective of the project includes the use of noncontacting laser-based photoacoustic measurement as a means of accurate, non-intrusive measurement of the electronic, vibrational, and optical properties of new high Tc superconducting materials. The non-intrusive measurement instrumentation is integrated for both continuous modulation and pulsed photoacoustic signal (PAS) measurements associated with bulk superconducting plate samples of rough and opaque surfaces. The overall results, the methods evaluated, and the experimental observations presented show that the laboratory proof-of-concept laser-based instrument can provide photoacoustic-related properties of high Tc superconducting materials using innovative fiberoptic/acoustic detection technology.