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Exploring the diffraction grating using a He-Ne laser and a CD-ROM

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Joel Tellinghuisen

Department of Chemistry, Vanderbilt University, Nashville, TN 37235

Carl Salter

Department of Chemistry, Moravian College, Bethelem, PA 18018

J. Chem. Educ., 2002, 79 (6), p 703

DOI: 10.1021/ed079p703

Publication Date (Web): June 1, 2002

Abstract

A compact disc (CD) serves as a diffraction grating for the study of the dependence of the angles of diffracted beams on that of the incident beam from a He-Ne laser. The demonstration/experiment illustrates in a visually powerful way the occurrence of different orders of diffraction. Knowledge of the wavelength of the laser permits determination of the groove spacing within ~1% by direct measurement of the angles with a protractor.

Keywords (Audience):

Second-Year Undergraduate

Keywords (Domain):

Demonstrations

Keywords (Feature):

Tested Demonstrations

Keywords (Subject):

Lasers

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This article has been cited by 1 ACS Journal articles (1 most recent appear below).

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