New Activity for Instrumental Analysis: Laser Beam Profiling

• Katherine Purvis ^[1] ; Richard Cisek ^[1] ; Danielle Tokarz ^[1]
  1. [1] Saint Mary's University

     Saint Mary's University

     Canadá

     
• Localización: Journal of chemical education, ISSN 0021-9584, Vol. 96, Nº 9, 2019, págs. 1977-1981
• Idioma: inglés
• Texto completo no disponible (Saber más ...)
• Resumen

  • Students built two laser beam profilers to measure several laser beam parameters in a university third-year instrumental chemistry laboratory using commercially available optical components used in modern optics research laboratories. While learning about practical properties of laser beams, students utilize laboratory grade optics and optomechanics for precise measurements of the laser beam quality factor, ellipticity, and diameter. Students build and troubleshoot beam profilers using two methods: the classic knife-edge technique as well as by employing a CMOS-based camera. Students recognize the sources of error associated with their constructed profiler, including background intensity, integration time, and lens alignment accuracy when measuring the beam parameters.