Optical limiting, pulse reshaping, and stabilization with a nonlinear absorptive fiber system

Journal Article · Thu May 01 04:00:00 EDT 1997 · Applied Optics

DOI:https://doi.org/10.1364/AO.36.003387· OSTI ID:565530

He, G S; Yuan, L; Bhawalkar, J D; Prasad, P N ^[1]

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1. Photonics Research Laboratory, Department of Chemistry, State University of New York at Buffalo, Buffalo, New York 14260-3000 (United States)

Optical limiting, pulse reshaping, and stabilization effects have been demonstrated based on a two-photon absorption mechanism with a dye-solution-filled hollow fiber system. The nonlinear absorptive medium is the solution of a new dye, {ital trans}-4-[p-(N-hydroxyethyl-N-methylamino)styryl]-N-methylpyridinium iodide (ASPI) in dimethyl sulfoxide, with which we filled a 20-cm-long quartz hollow fiber of 100-{mu}m internal diameter. The input optical signal wa a laser pulse train that contained {approximately}30 pulses of 130-ps pulse width. When the input peak intensity reached 400{endash}1000-MW/cm{sup 2} levels, obvious optical limiting could be observed and the envelope of the transmitted pulse train became flatter and broader. By using another new dye solution, 4-[N-(2-hydroxyethyl)-N-(methyl)amino phenyl]-4{sup {prime}}-(6-hydroxyhexyl sulfonyl)-stilbene (APSS) in benzyl alcohol, which interacted with a series of {approximately}800-nm laser pulses of {approximately}8-nm pulse width, we obtained a much higher nonlinear absorption coefficient and a superior optical peak-power stabilization effect. {copyright} 1997 Optical Society of America

• OSTI ID: 565530
• Journal Information: Applied Optics, Journal Name: Applied Optics Journal Issue: 15 Vol. 36; ISSN APOPAI; ISSN 0003-6935
• Country of Publication: United States
• Language: English

Related Subjects

42 ENGINEERING
ABSORPTION SPECTRA
DYE LASERS
MULTI-PHOTON PROCESSES
OPTICAL FIBERS
PULSE SHAPERS
PULSE TECHNIQUES
STABILITY
VISIBLE SPECTRA