Coherence length measurement for ultra-short laser pulses using digital holography and statistical fringe analysis
Various techniques in interferometry require lasers of short coherence length, taking advantage of the fact that light interferes only in the areas where the optical path difference (OPD) of two beams is shorter than its coherence length. Examples of these techniques are light-in-flight recording by...
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| Main Authors: | , , , , |
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| Format: | text |
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Animo Repository
2013
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| Subjects: | |
| Online Access: | https://animorepository.dlsu.edu.ph/faculty_research/8131 |
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| Institution: | De La Salle University |
| Summary: | Various techniques in interferometry require lasers of short coherence length, taking advantage of the fact that light interferes only in the areas where the optical path difference (OPD) of two beams is shorter than its coherence length. Examples of these techniques are light-in-flight recording by holography [1], optical coherence tomography [2], 3D shape measurement [3-4], and short coherence microscopy [5]. These techniques use a priori knowledge of the laser’s coherence length in order to extract valuable information about the test object (e.g., its position, shape, or refractive index distribution). |
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