Accession Number : ADA325754

Title :   High-Intensity High-Resolution Solid State Tunable Lasers.

Descriptive Note : Final technical rept. 1 Dec 94-30 Nov 96,

Corporate Author : UNIVERSITY OF SOUTHERN CALIFORNIA LOS ANGELES DEPT OF CHEMISTRY

Personal Author(s) : Reisler, Hanna ; Wittig, Curt

PDF Url : ADA325754

Report Date : APR 1997

Pagination or Media Count : 6

Abstract : A laser system based on a solid state injection seeded laser pumping optical parametric oscillators has been constructed for applications to molecule-surface interactions. This laser system generates pulsed, high-energy (10-100 mJ), broadly tunable, near-transform-limited linewidth radiation to be used for exciting molecular species to high vibrational levels. The approach selected mates an injection seeded Nd:YAG laser with spatially flat-topped pulses with an optical parametric oscillator operating in grazing incidence to generate the narrow bandwidth pulses. These pulses are then further amplified. A unique feature of the device is its frequency stabilization which is crucial for experiments in which molecules are maintained at high level of excitation for extended periods. A second laser system, based on a tunable, grazing incidence, dye laser is used to monitor excited molecules and products by laser ionization. Excellent performance has been obtained with this device, as demonstrated in experiments in which HCl in v=2, j=1 is scattered from surfaces.

Descriptors :   *SOLID STATE LASERS, *TUNABLE LASERS, *HIGH RESOLUTION, STABILIZATION, FREQUENCY, OSCILLATORS, LASER PUMPING, YAG LASERS, INJECTION LASERS, OPTICAL EQUIPMENT, OPTICS, RADIATION, VIBRATION, PARAMETRIC ANALYSIS, INTERACTIONS, MOLECULES, EXCITATION, INTENSITY, LASERS, PULSES, IONIZATION, SURFACE REACTIONS, DYE LASERS, BANDWIDTH, NARROWBAND, GRAZING.

Subject Categories : Lasers and Masers
      Optics

Distribution Statement : APPROVED FOR PUBLIC RELEASE