Construction of a Visible Diode Laser Source for Free Radical Photochemistry and Spectroscopy ExperimentsTunable diode lasers are reliable sources of narrow-band light and comparatively cheap. Optical feedback simplifies frequency tuning of the laser diodes. We are building an inexpensive diode laser system incorporating optical feedback from a diffraction grating. The external optical cavity can be used with lasers that emit between 2 and 100 mW, and will also work if they are pulsed, although this will significantly degrade the bandwidth. The diode laser output power and bandwidth are comparable to CW dye lasers used in kinetics and dynamics experiments. However, their cost and maintenance will be much less as will alignment time. We intend to use the diode lasers to investigate CN and C2 kinetics as well as to study dissociation dynamics of atmospherically important molecules.
Newman, Bronjelyn (Howard Univ. Washington, DC United States)
Halpern, Joshua B. (Howard Univ. Washington, DC United States)
August 17, 2013
January 1, 1997
Publication: The First National Student Conference: NASA University Research Centers at Minority Institutions