Distributed-feedback dye laser for picosecond ultraviolet and visible spectroscopy

Journal Article · Wed Mar 01 04:00:00 EST 2000 · Review of Scientific Instruments

DOI:https://doi.org/10.1063/1.1150455· OSTI ID:20215681

Yaney, Perry P ^[1]; Kliner, Dahv A. V. ^[1]; Schrader, Paul E ^[1]; Farrow, Roger L ^[1]

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1. Sandia National Laboratories, Combustion Research Facility, Livermore, California 94551 (United States)

We describe the design and operation of a tunable, picosecond laser system for use in time-resolved spectroscopic measurements in the visible and ultraviolet (UV) spectral region. The laser is designed for fine tuning and high wavelength stability. A Nd:YAG-pumped distributed-feedback dye laser (DFDL) generates pulses that are {approx}100 ps in duration with a nearly transform-limited linewidth ({approx}5 GHz) at a 20 Hz repetition rate. The DFDL pulses are amplified in two bow-tie amplifiers, providing pulse energies of up to 3.0 mJ; the amplified pulses may be frequency doubled to the UV spectral region, providing up to 1.0 mJ. The DFDL wavelength is computer stabilized to within {+-}0.8 pm ({+-}0.7 GHz, two standard deviations), allowing the wavelength to be stationed on a narrow atomic or molecular transition or permitting nearly continuous spectral scans. Application of the laser system to studies of OH energy transfer has been demonstrated; both laser-induced-fluorescence and degenerate-four-wave-mixing spectra have been recorded. (c) 2000 American Institute of Physics.

• OSTI ID: 20215681
• Journal Information: Review of Scientific Instruments, Journal Name: Review of Scientific Instruments Journal Issue: 3 Vol. 71; ISSN 0034-6748; ISSN RSINAK
• Country of Publication: United States
• Language: English

Related Subjects

42 ENGINEERING
DESIGN
DYE LASERS
EXPERIMENTAL DATA
FLUORESCENCE SPECTROSCOPY
HYDROXYL RADICALS
OPTICAL SPECTROMETERS
STABILITY
TUNING
ULTRAVIOLET SPECTROMETERS
VISIBLE SPECTRA