TITLE

High contrast, depth-resolved thermoreflectance imaging using a Nipkow disk confocal microscope

AUTHOR(S)
Summers, J. A.; Yang, T.; Tuominen, M. T.; Hudgings, J. A.
PUB. DATE
January 2010
SOURCE
Review of Scientific Instruments;Jan2010, Vol. 81 Issue 1, p014902
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
We have developed a depth-resolved confocal thermal imaging technique that is capable of measuring the temperature distribution of an encapsulated or semi-obstructed device. The technique employs lock-in charge coupled device-based thermoreflectance imaging via a Nipkow disk confocal microscope, which is used to eliminate extraneous reflections from above or below the imaging plane. We use the confocal microscope to predict the decrease in contrast and dynamic range due to an obstruction for widefield thermoreflectance, and we demonstrate the ability of confocal thermoreflectance to maintain a high contrast and thermal sensitivity in the presence of large reflecting obstructions in the optical path.
ACCESSION #
47807345

 

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