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Optics Letters

Optics Letters

| RAPID, SHORT PUBLICATIONS ON THE LATEST IN OPTICAL DISCOVERIES

  • Vol. 20, Iss. 23 — Dec. 1, 1995
  • pp: 2393–2395

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

Guang S. He, Jayant D. Bhawalkar, Chan F. Zhao, Chi-Kyun Park, and Paras N. Prasad  »View Author Affiliations


Optics Letters, Vol. 20, Issue 23, pp. 2393-2395 (1995)
http://dx.doi.org/10.1364/OL.20.002393


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Abstract

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-[N-(2-hydroxyethyl)-N-(methyl)amino phenyl]-4′-(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 2–3.5-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 20–30 μJ for a 15-cm-long hollow-fiber sample of 100-μm internal diameter. The conversion efficiency from the absorbed pump energy to the upconverted lasing output was 2.3%.

© 1995 Optical Society of America

History
Original Manuscript: July 31, 1995
Published: December 1, 1995

Citation
Guang S. He, Jayant D. Bhawalkar, Chan F. Zhao, Chi-Kyun Park, and Paras N. Prasad, "Two-photon-pumped cavity lasing in a dye-solution-filled hollow-fiber system," Opt. Lett. 20, 2393-2395 (1995)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-20-23-2393

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