23 March 1993 New features of 977-nm anti-Stokes stimulated four-photon mixing pulses emitted from an Er3+-doped silica fiber
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Proceedings Volume 1789, Fiber Laser Sources and Amplifiers IV; (1993); doi: 10.1117/12.141120
Event: Fibers '92, 1992, Boston, MA, United States
Abstract
Resonance-enhanced anti-stokes of stimulated four photon mixing is demonstrated for the first time in an Er3+ doped silica fiber under the excitation of a 1064 nm laser. The enhancement of 977 nm anti-stokes of stimulated four-photon mixing by the excited state 4I11/2 of Er3+ has been observed. After the fiber being prepared for efficient SHG, the spectra of stokes and anti-stokes stimulated four-photon mixing were measured again and found to have shifted 2 nm, respectively. We attribute this phenomenon to photo induced refractive-index changes in the fiber: one is caused by the short wavelength light absorptions of GeO, and the other is by the change of intensity-dependent Er3+ population in excited states.
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Yi-Min Hua, Qu Li, Yingli Chen, Yi-Xin Chen, "New features of 977-nm anti-Stokes stimulated four-photon mixing pulses emitted from an Er3+-doped silica fiber", Proc. SPIE 1789, Fiber Laser Sources and Amplifiers IV, (23 March 1993); doi: 10.1117/12.141120; https://doi.org/10.1117/12.141120
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KEYWORDS
Optical fibers

Absorption

Refractive index

Erbium

Fiber lasers

Luminescence

Phonons

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