Two-photon-pumped cavity lasing in a dye-solution-filled hollow-fiber system

Journal Article · Fri Dec 01 04:00:00 EST 1995 · Optics Letters

DOI:https://doi.org/10.1364/OL.20.002393· OSTI ID:436675

He, G S; Bhawalkar, J D; Zhao, C F; Park, C; 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)

Two-photon-pumped cavity lasing has been achieved in a dye-solution-filled hollow-fiber configuration that provides both a longer gain length and a higher local pump intensity. The gain medium is a solution of the new dye 4-[{ital N}-(2-hydroxyethyl)-{ital N}-(methyl)amino phenyl]-4{prime}-(6-hydroxyhexyl sulfonyl)stilbene in dimethyl sulfoxide, which shows a strong two-photon-absorption-induced fluorescence when excited with near-infrared radiation. When the system is pumped with 800-nm 5-ns laser pulses, frequency-upconverted cavity lasing can be observed with a peak lasing wavelength near 565 nm and a 2{endash}3.5-ns pulse duration. One of the major advantages of using a hollow-fiber geometry is the low two-photon pump threshold, which was measured to be as low as 20{endash}30 {mu}J for a 15-cm-long hollow-fiber sample of 100-{mu}m internal diameter. The conversion efficiency from the absorbed pump energy to the upconverted lasing output was 2.3{percent}. {copyright} {ital 1995 Optical Society of America.}

• Sponsoring Organization: USDOE
• OSTI ID: 436675
• Journal Information: Optics Letters, Journal Name: Optics Letters Journal Issue: 23 Vol. 20; ISSN 0146-9592; ISSN OPLEDP
• Country of Publication: United States
• Language: English

Related Subjects

42 ENGINEERING
DESIGN
DYE LASERS
EFFICIENCY
FREQUENCY CONVERTERS
GAIN
PERFORMANCE
PULSE TECHNIQUES