Physical Sciences and Mathematics Commons^™

The Design And Construction Of A Nitrogen Laser And Its Use To Pump A Tunable Dye Laser To Measure The Multiphoton Ionization Spectrum Of Molecular Iodine, James Kintigh

Masters Theses & Specialist Projects

A nitrogen laser was constructed for use in multiphoton ionization studies. The short pulse duration and highly intense pulse make the nitrogen laser ideal for pumping a dye laser.

By using the nitrogen laser to pump a tunable dye laser, the multiphoton ionization spectrum for molecular iodine vapor was obtained for the visible spectrum between 23,188 cm^-1 (430 nm) and 16, 304 cm^-1 (615 nm) using pulsed electronics and a parallel plate ionization chamber. The ionization occurs in this region upon the absorption of four or five photons. The ionization appears to take place via a three-step process. …