The Michelson Interferometer from AGN Enterprises is a precision educational optical instrument designed for the practical study of interference of light, wavelength measurement, fringe formation, optical path difference, and refractive index. It provides students with a clear demonstration of wave optics principles and is suitable for advanced physics, optics, and engineering laboratory experiments.
The instrument works by dividing a coherent light beam into two separate optical paths using a beam splitter. The beams travel toward two mirrors, reflect back, and recombine. Therefore, differences between their optical path lengths produce interference fringes. Students can observe these fringes and investigate how small changes in mirror position affect the interference pattern.
Moreover, a precisely controlled mirror displacement enables learners to count the number of fringes crossing a reference point. Using the measured displacement and fringe count, students can determine the wavelength of a monochromatic light source. Consequently, the experiment demonstrates how optical interference can measure extremely small distances with high sensitivity.
Depending on the experimental arrangement and available accessories, students can also investigate refractive index, optical path variation, interference fringe behavior, and coherence concepts. Furthermore, the setup develops practical skills in optical alignment, fringe adjustment, observation, measurement, calculation, and experimental analysis.
The apparatus is particularly valuable for demonstrating the wave nature of light and introducing precision interferometric measurement techniques used in science and engineering.
For additional educational information about interferometry and optical measurement, students can refer to the National Institute of Standards and Technology (NIST)
Model No. | Types |
AGN-EI-561A | Michelson Interferometer Complete with Sodium Lamp Assembly |
| AGN-EI-561B | Michelson Interferometer Complete with Diode Laser |
The precision optical interference system provides a structured platform for studying fringe formation and optical path differences. In addition, instructors can demonstrate how very small mechanical displacements produce measurable changes in an interference pattern.
