A high-performance laser energy meter based on anisotropic Seebeck effect in a strongly correlated electronic thin film

• Published in: Applied physics. A, Materials science & processing Vol. 113; no. 2; pp. 347 - 353
• Main Authors: Zhang, G.-Y., Zheng, H.-R., Huang, W.-H., Zhang, X.-Y., Gao, D.-L., Zhang, H., Zhang, P.-X., Tseng, T.-Y., Habermeier, H.-U., Lin, C.-T., Cheng, H.-H.
• Format: Journal Article
• Language: English
• Published: Berlin/Heidelberg Springer Berlin Heidelberg 01.11.2013; Springer
• Subjects: ANISOTROPY; Characterization and Evaluation of Materials; Colossal magnetoresistance; Condensed Matter Physics; Condensed matter: electronic structure, electrical, magnetic, and optical properties; Cuprates superconductors (high tc and insulating parent compounds); Exact sciences and technology; Machines; Magnetic properties and materials; Magnetotransport phenomena, materials for magnetotransport; Manganites; Manufacturing; Nanotechnology; Optical and Electronic Materials; Physics; Physics and Astronomy; Processes; Superconductivity; Surfaces and Interfaces; Thin Films; LaAlO3; Transition Edge Sensor; Strongly Correlate Electronic; Laser Energy; Seebeck Coefficient; Aluminium oxide; Radiation effects; High performance; Ternary compounds; Seebeck effect; Colossal magnetoresistance; Cuprates; Lanthanum oxide; Thin films; Anisotropy; Strong correlation; Laser radiation; Lanthanum aluminate; High-Tc superconductors; YAG; Manganites
• ISSN: 0947-8396; 1432-0630
• DOI: 10.1007/s00339-013-7652-0

We have developed a high-performance laser energy meter based on anisotropic Seebeck effect in a strongly correlated electronic (SCE) thin film. SCE thin films, typically represented by high-temperature superconductor (HTS) cuprate and colossal magnetoresistance (CMR) manganite thin films, demonstrate tremendous anisotropic Seebeck effect. In this study, a La 2/3 Ca 1/3 MnO 3 thin film grown on a tilted LaAlO 3 substrate is tested with the fundamental, the second, the third, and the fourth harmonics (1064, 532, 355, 266 nm, respectively) of a Q-switched Nd:YAG laser over a wide range of temperatures from room temperature to 16 K. The peak-value of the laser-induced thermoelectric voltage signal shows a good linear relationship with the laser energy per pulse in the measured wavelength and temperature ranges. The combined advantages over other commercial laser detectors such as nanosecond-order response and spectrally broad and flat response over a wide range of temperatures, in situ real-time measurement, and energy savings, make the device an ideal candidate for next-generation laser detectors and laser power/energy meters.