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Shared Laser Facility

Director: Dr. Larry Scatena • 541-346-5159

The Shared Laser Facility is a multidisciplinary laser and optics laboratory shared by chemists, materials scientists, optical scientists and physicists. It is available to the university community and others by arrangement. The 3,000-square-foot laboratory is centrally located between the department of chemistry and department of physics. Funds for its operation are provided by the department of chemistry, the optical sciences program of the department of physics, and user fees. Both its location and funding sources reflect the collegiality and intergroup cooperation which the facility helps foster. The proximity of diverse groups provides a unique opportunity for graduate students and postdoctoral researchers to exchange ideas, share equipment, and keep abreast of research outside their own groups.too

A number of state-of-the-art laser systems are currently available in the Shared Laser Facility. Two ultrafast amplified titanium:sapphire (Ti:S) laser systems reside in the facility producing millijoule pulse energies at a 1 kHz repetition rate. One Ti:S laser source produces 2 picosecond pulses and is used to generate picosecond IR pulses tunable from 2.3 microns to about 10 microns. This source is used for a wide variety of second-order non-linear optical (NLO) studies of surfaces and interfaces. The second Ti:S laser source produces 100 femtosecond (10-13 sec) pulses and drives a pair of NLO wavelength conversion sources producing 100-200 femtosecond pulses tunable from 300 nm to 10 microns. This source is used for studies of NLO materials in solution and in thin films; for time-resolved studies of solvation effects on photochemical reaction dynamics; and for NLO studies of surfaces and interfaces. The facility also houses several pulsed Nd:YAG lasers, a pulsed dye laser, a CW modelocked Nd:YAG laser, a CW argon ion laser, sub-30 fs titanium:sapphire oscillator, and several CW dye lasers. These latter laser sources are available for general use on an as-needed basis, and provide a unique capability for allowing investigators to perform so-called “proof-of-principle” experiments before writing grant proposals or investing in dedicated equipment. Other equipment includes a substantial collection of optics and opto-mechanical components (for proto-typing and short-term loan), infrared viewers, oscilloscopes, a laser pulse autocorrelator, a laser wavemeter, a time-correlated single photon counting system, beam spatial profiler, fiber optic spectrometer and multiple laser-power and energy meters.

The Shared Laser Facility is supervised by Dr. Lawrence Scatena, who is available to advise and assist any groups using laser- and/or optics-based experimental techniques. Such assistance may range from proposal writing, experiment design, design and construction of custom laser sources, data acquisition and processing, computer programming and interfacing, laser diagnosis, maintenance, and repair.