Laser-induced anisotropic thermoelectric voltages in thin films
- 15 August 1973
- journal article
- research article
- Published by AIP Publishing in Applied Physics Letters
- Vol. 23 (4), 206-208
- https://doi.org/10.1063/1.1654860
Abstract
Transverse thermoelectric voltages have been observed to occur when thin Mo and W films are excited by pulsed laser light at normal incidence to the film. Wavelengths in the range 0.46–1.06 μm and pulse widths of ∼ 3–300 nsec were used. A maximum thermoelectric voltage of ∼50 mV occurring across a load resistance of 50 Ω for an ∼ 1‐kW incident laser pulse has been observed. A correlation between intrinsic film stress and output voltage suggests that the stress gives rise to a nonscalar absolute thermoelectric power (Seebeck coefficients) even though the transport properties of these bulk materials are isotropic.Keywords
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