Investigation of laser fundamentals using a helium-neon laser

M Jackson, D Bauen, J E Hasbun
2001 European journal of physics  
Using an open-frame helium-neon (He-Ne) laser and optical spectrum analyser, students performed several upper-division laboratory experiments investigating important concepts regarding laser fundamentals. Such experiments include cavity stability (mirror geometry and thermal effects), longitudinal and transverse modes, free spectral range, and mode sweeping. In this paper we discuss, in an elementary way, the experimental procedures and results obtained. (Some figures in this article are in
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doi:10.1088/0143-0807/22/3/303 fatcat:4zyw2iijr5g7vmbwpca2dxdlma