We report detection of space shuttle insulation foam defects by using a 0.2 THz Gunn diode oscillator as the light source, and a pyroelectric camera as the detector. The size and location of the defects are identified, and the feasibility of using this imaging system in quality inspection is discussed.
© 2004 Optical Society of America
H. Zhong, N. Karpowicz, J. Xu, Y. Deng, W. Ussery, M. Shur, and X. Zhang, "Detection of space shuttle insulation foam defects by using a 0.2 THz Gunn diode oscillator and pyroelectric detector," in Frontiers in Optics 2004/Laser Science XXII/Diffractive Optics and Micro-Optics/Optical Fabrication and Testing, OSA Technical Digest Series (Optical Society of America, 2004), paper FTuG28.
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