A tunable, narrow bandwidth, high peak power picosecond infrared (IR) laser system is described. The pump source is a picosecond Ti:sapphire regenerative amplifier seeded by a picosecond Ti:sapphire oscillator. The pump bandwidth and pulse duration are tunable producing 4–5 ps, 5–4 pulses at 1 kHz. IR pulses are produced by optical parametric generation (OPG) followed by optical parametric amplification (OPA). Tuning is possible over the entire 1050–3300 nm region of the IR, with energies in excess of 15 μJ over most of the range. The temporal and spectral characteristics of the IR pulses are reviewed with a particular focus on the sources of bandwidth broadening in the OPG/OPA. Bandwidth optimization of the IR output is discussed. A spectral filtering scheme results in less than 15 IR bandwidth, suitable for nonlinear optical spectroscopic applications.
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November 2000
Research Article|
November 01 2000
Picosecond infrared optical parametric amplifier for nonlinear interface spectroscopy
D. Bodlaki;
D. Bodlaki
Department of Chemistry and Surface Science Center, University of Pittsburgh, 219 Parkman Avenue, Pittsburgh, Pennsylvania 15260
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E. Borguet
E. Borguet
Department of Chemistry and Surface Science Center, University of Pittsburgh, 219 Parkman Avenue, Pittsburgh, Pennsylvania 15260
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Rev. Sci. Instrum. 71, 4050–4056 (2000)
Article history
Received:
June 27 2000
Accepted:
September 03 2000
Citation
D. Bodlaki, E. Borguet; Picosecond infrared optical parametric amplifier for nonlinear interface spectroscopy. Rev. Sci. Instrum. 1 November 2000; 71 (11): 4050–4056. https://doi.org/10.1063/1.1321302
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