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ERIC Number: EJ843920
Record Type: Journal
Publication Date: 2009-Jul
Pages: 7
Abstractor: As Provided
ISSN: ISSN-0143-0807
A Simple Laser Teaching Aid for Transverse Mode Structure Demonstration
Ren, Cheng; Zhang, Shulian
European Journal of Physics, v30 n4 p705-711 Jul 2009
A teaching aid for demonstrating the transverse mode structure in lasers is described. A novel device called "multi-dimension adjustable combined cat-eye reflector" has been constructed from easily available materials to form a He-Ne laser resonator. By finely adjusting the cat-eye, the boundary conditions of the laser cavity can be altered, which allows the transverse modes output by laser to be conveniently modulated. Equipped with a CCD imaging system, this apparatus allows more than 20 laser transverse modes to be visualized on the computer screen, provided a valuable teaching aid at an undergraduate level. (Contains 8 footnotes and 7 figures.)
Institute of Physics Publishing. The Public Ledger Building Suite 929, 150 South Independence Mall West, Philadelphia, PA 19106. Tel: 215-627-0880; Fax: 215-627-0879; e-mail:; Web site:
Publication Type: Journal Articles; Reports - Descriptive
Education Level: Higher Education; Postsecondary Education
Audience: N/A
Language: English
Sponsor: N/A
Authoring Institution: N/A