Share Email Print
cover

Proceedings Paper • Open Access

Adaption of the Michelson interferometer for a better understanding of the temporal coherence in lasers
Author(s): M. A. Illarramendi; J. Zubia; J. Arrue; I. Ayesta

Paper Abstract

In this work, we show a design of a laboratory exercise in which a digital camera has been coupled to a Michelson interferometer based on free-propagation arms. By using the camera, our students measure the evolution of the interference patterns as a function of the difference between the optical paths of the arms. In this way, they obtain the corresponding reduction of the contrast of the fringes. The analysis of the results allows one to calculate the coherence length, and also to relate the temporal coherence of the employed laser with its spectral line profile. The exercise has been carried out with two lasers, which present different coherence lengths.

Paper Details

Date Published: 16 August 2017
PDF: 7 pages
Proc. SPIE 10452, 14th Conference on Education and Training in Optics and Photonics: ETOP 2017, 1045249 (16 August 2017); doi: 10.1117/12.2266546
Show Author Affiliations
M. A. Illarramendi, Univ. of the Basque Country (Spain)
J. Zubia, Univ. of the Basque Country (Spain)
J. Arrue, Univ. of the Basque Country (Spain)
I. Ayesta, Univ. of the Basque Country (Spain)


Published in SPIE Proceedings Vol. 10452:
14th Conference on Education and Training in Optics and Photonics: ETOP 2017
Xu Liu; Xi-Cheng Zhang, Editor(s)

© SPIE. Terms of Use
Back to Top