H. Coufal, Harold F. Winters, et al.
Physical Review B
Paper
Charge profiles of thin electret films mapped with subnanosecond thermal pulses
Abstract
Charge profiles in various electret films are mapped with a resolution of 7 nm, using thermal pulses generated by the absorption of picosecond excimer-laser pulses. The use of these films for calorimetry and thermometry of radiation-induced transient heating with a time resolution of 350 psec is demonstrated, and applications for their use as ultrafast detectors for ultrasound are discussed. © 1989, Optical Society of America.
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