Course No：11121220
Title：Precision Interferometry and Applications
Class Hours/Week: 3- 2 (8 Weeks) Credit：2
Category：Technical Elective
Prerequisites： Applied Optics, Physical Optics
Audience：Undergraduate
Teaching manner：Multimedia teaching
Course objectives and basic requirements:
With the development of high science technology, precision interferometry and application has become an important branch of the field of optical and electricity. Because of a lot of techniques, novel interference systems, new testing methods and principles, the development of numerical counting technology makes the interference metrology and applications spread over the fields of high science technology. It is one of the major measurement means with high accuracy. Students of information subject can master some basic interference testing methods and applications making use of interference, diffraction and polarization detecting principles and novel techniques.
Course introduction:
The course combined with the needs of country completely described optical-electric sensor interferometry based on the theory of optical interference, diffraction and polarization etc. Some of the novel testing technique, common-path interference, polarization method, laser heterodyne interferometry and phase shifting with the method of time and space phase modulation.
Syllabus and lecture schedule:
Theory class: ( 24 class hours)
Course content:
Introduction: The development of modern interferometry 2 class hour
Chapter.1 The theory of pupil and window 8 hours
1. Design rules of interference detecting system 1 hours
2. To form and adjust of interference fringe pattern 1 hours
3. Coherence demand of light source for interferometry 0.5 hours
4. Design of illumination system for interferometry 0.5 hours
5. The design fundamental and applications of modern interference systems 0.5 hours
6. Layout of novel common-path interference system 1.5 hours
7. Principle and applications of polarized interference technique 1hours
8. Design demonstration of numerical wave-front interferometer 2 hours
Chapter.2 Technique of testing length using interferometer 10 hours
1. Development and features of length testing using interferometer 0.5 hours
2. To choice the type of light source for length measurement 1 hours
3. To choice key of moving testing mirror 1 hours
4. Principle and implementing of reversible counter 1 hours
5. Phase shifting technique for quartic frequency 1 hours
6. Precision locating technique for length testing 0.5 hours
7. Locating system and application of white light interference 1.5 hours
8. Principle of acceleration sensor 0.5 hours
9. Technique and applications for laser testing vibration 1.5 hours
10. Technique and applications for laser heterodyne measurement 1.5 hours
Chapter.3 Real-time testing technique of digitized wave-front 4 hours
1. Testing principle with synchronization correlation method in phase shifting 0.5 hours
2. Technique features in phase shifting using fringe scanning 1 hours
3. Phase unwrapping processing 1 hours
4. Wave-front fitting and date analysis 1 hours
5. Applications of modern digitized wave-front technique 0.5 hours
Related teaching sections:
1. Multimedia teaching
2. To exercise 2 hours after the class every two weeks
3. Experiment classes: (Altogether 16 studying periods)
Test one: Surface testing using laser Fizeau interferometer 4 class hours
Test two: correlation validate and microscopic profile measurement using
interference microscope 4 class hours
Test three: Piezoelectricity dynamic distortion testing using contact type
interferometer 4 class hours
Test four: Optical testing using modern digitized wave-front interferometer 4 class hours
Test and Grading Criteria：
The period overall scores are composed of two parts: Usually the result by both the theory and the experimental result two parts of syntheses, to occupy 30 percent and the exam score is 70 percent in the period overall scores.
Suggested textbooks or references:
Teaching material:
Optical Shop Testing, Second Edition, 1992 by John Wiley & Sons, Inc. DANIEL MALACARA
Reference books:
1. Translating by Li Chenyie. Theoretical foundation and applications of interferometer. Technology standard press.
2. Translating by Cao Tianning. Optical interferogram processing and evaluating. Mechanical industry press.
3. Wu Xingan. Dual frequency laser interferometer. China metrology press.
4. Yang Guoguang. Modern optical testing technology. Zhejiang University press.
Yin Chunyong. Modern interference testing technique. Tientsin University press.