201491 - Óptica Coherente (OPTATIVAS VINCULADAS - ORIENTACIÓN OPTOELECTRÓNICA) - Curso 2011/2012
- Créditos ECTS
- Créditos ECTS: 6.00
- Total: 6.0
- Tipo: Materia Ordinaria RD 1497/1987
- Departamentos: Física Aplicada
- Áreas: Óptica
- Centro: Facultade de Física
- Convocatoria: Segundo Cuadrimestre
- Docencia e Matrícula: null
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Existen programas da materia para os seguintes idiomas:CastelánGalegoInglésCourse objectives
Learning the basics and the ways of thinking related to the linear description of optical systems, Fourier optics, optical coherence and the fundamentals of holography. This implies (a) a deeper knowledge of the diffraction phenomena already studied in earlier courses, of their asymptotic and numerical evaluation and of their usefulness for the study of linear optical systems, mainly for those related to imaging and spectra; (b) to know the physical and mathematical description of optical phenomena related to the partial coherence of light and (c) to understand the fundamentals and applications of holography.Contents
1. MODELING DIFFRACTION PHENOMENA
1.1. Fundamentals of the scalar theory of diffraction.
1.2. Fresnel and Fraunhoffer approximations.
1.3. Asymptotic evaluations of diffraction integrals.
1.4. Numerical evaluation of diffraction integrals.
1.5. Ocean wave optics.
1.6. Introduction to wavefront sensors.
2. LINEAR SYSTEMS AND FOURIER OPTICS
2.1. Two-dimensional Fourier transforms.
2.2. Linear systems in Optics.
2.3. Two-dimensional sampling and signal recovery.
2.4. Quadratic transformers of phase.
3. SPATIAL INFORMATION PROCESSING
3.1. Analysis and synthesis in the frequency domain.
3.2. Analysis of imaging systems.
3.3. Operations with real filters.
3.4. Operations with complex filters.
4. PARTIAL COHERENCE OF LIGHT
4.1. Introduction to the phenomena related to the partial coherence of light.
4.2. Scalar theory of optical coherence. Applications.
5.1. Basic principles of holographic techniques. Applications.
5.2. Computer-generated holograms. Diffractive optical elements. Basic and complementary bibliography
BORN, M. and WOLF, E., Principles of Optics (Pergamon Press, 1980, and later editions)
CASASENT, D. (ed.), Optical Data Processing. Topics in Applied Physics, vol 23 (Springer).
COWLEY, J.M., Diffraction Physics (North Holland, 1986)
FRIEDEN, B.R., The computer in optical research. Methods and applications. Topics in Applied Physics, vol 41 (Springer, 1980).
GASKILL, J.D., Linear Systems, Fourier transforms and Optics (Wiley, 1978)
GEARY, J.M., Introduction to wavefront sensors (SPIE, 1995)
GOODMAN, J.W., Introduction to Fourier Optics (McGraw-Hill, 1968 and later editions)
PAPOULIS, A., Systems and Transforms with Applications in Optics (Krieger, 1981)
REYNOLDS, DeVELIS, PARRENT and THOMPSON, Physical Optics Notebook: Tutorials in Fourier Optics (SPIE, 1989)
STAMNES, J. Waves in Focal Regions, (Adam Hilger, 1986)
STEWARD, E.G., Fourier Optics: An introduction (Ellis Horwood, 1987)Competence
After successful completion of this course the student shall be able
* to know the validity range of each approximation of the diffraction integrals, and to decide the best approximation for analyzing different diffractional phenomena,
* to evaluate -asymptotically and numerically- different diffraction integrals,
* to decide in which situations it is advisable the use of wavefront sensors, and to design their basic parameters,
* to describe both the similarities and the differences between the propagation of electromagnetic waves and surface waves in liquids,
* to interpret the diffractive models as two-dimensional Fourier transforms, and to know their general properties,
* to describe linear optical systems and to get conclusions about their performance and behaviour,
* to design samplig strategies for information storage and retrieval based on the Nyquist-Kotelnikov-Whittaker-Shannon theorem,
* to know how quadratic phase transformers work, and to design them using different technologies as refractive, diffractive or hybrid elements,
* to describe -in an equivalent way- the behaviour of linear optical systems in the spatial and in the frequency domain,
* to predict the behaviour of imaging systems from the knowledge of their point-spread function and/or their optical transfer function,
* to describe the effects due to the different degrees of coherence of the optical field,
* to know the principles and applications of holographic techniques.Teaching methodology
Four hours per week of lectures, until completing 45 hours.
Several laboratory sessions through the semester, until completing 15 hours
Homework numerical and conceptual problems are provided for training. Up-to-date technical journal articles related to the contents of the course are also given for study and evaluation.
Lectures are given in Galician and/or Spanish.
Working languages: Galician, English, Spanish. Assessment system
The evaluation of the students' learning will be based on
(a) a writen examination (to be held in the dates officially approved by the USC), which may include both conceptual questions and numerical problem-solving tasks.
(b) the individual student reports of his/her laboratory work. Assistance to the lab sessions and realization of the associated tasks in agreement with the laboratory workplan and schedule are mandatory.
Should any item or aspect of the student's work deserve to be further clarified, he/she could be called for a personal interview.
In order to pass this course it is required to perform satisfactorily both in the written examination and in the experimental work. Having done so, the final grade will be the arithmetic mean of the grades obtained in items (a) and (b), plus/minus one level to be granted depending on the student's active participation in lectures and -were it the case- on the elaboration of complementary academic works.
Eventually and according to the number of students, it will be considered the option of replacing the exam with the evaluation of one or more works presented by the student, by proposal of the teachers, and related to the objectives of the course.Study time and individual work
*Working time at classroom or labs (hours): Theory 30, Seminars 15, Laboratory 15, Evaluation 10.
*Individual work (hours): 50.
*Overall working time (hours): 120 (4 ECTS ).Recommendations for the study of the subject
Refreshing the concepts already studied in the introductory course on Optics, the associated experimental labs, and the remaining one-semester courses of Optoelectronics will help.