A large-depth-of-field projected fringe profilometry using supercontinuum light illumination

Wei Hung Su, Kebin Shi, Zhiwen Liu, Bo Wang, Karl Martin Reichard, Shizhuo Yin

Research output: Contribution to journalArticle

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In this paper, a large-depth-of-field projected fringe profilometry using a supercontinuum light source generated by launching femto second laser pulses into a highly nonlinear photonic crystal fiber is presented. Since the supercontinuum light has high spatial coherence and a broad spectral range (from UV to near infrared), a high power (hundreds of mW) point white light source can be employed to generate modulated fringe patterns, which offers following major advantages: (1) large-depth-of-field, (2) ease of calibration, and (3) little speckle noise (a major problem for the laser system). Thus, a highly accurate, large-depth-of-field projected fringe profilometer can be realized. Both the theoretical description and experimental demonstration are provided.

Original languageEnglish (US)
Pages (from-to)1025-1032
Number of pages8
JournalOptics Express
Issue number3
Publication statusPublished - Jan 1 2005


All Science Journal Classification (ASJC) codes

  • Atomic and Molecular Physics, and Optics

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