Optical gain and loss studies in Ce^3+:YLiF_4

Lim, Ki-Soo; Hamilton, Douglas S.

doi:10.1364/josab.6.001401

Cited by 54 publications

(20 citation statements)

References 10 publications

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“…12 The above hypotheses are also based on a number of other considerations. First, ESA has been observed when Ce:YLF ͑which is nearly structurally and spectrally identical to Ce:LiLuF͒ was pumped by a 308-nm XeCl laser, 23 implying that ESA is likely to occur in Ce:LiLuF in the 300-nm spectral region. Second, the Ce:LiLuF fluorescence lifetime did not change across the studied temperature range ͑Ϫ3-40°C͒, indicating that crystal heating does not lead to the introduction of an alternative 5d level relaxation mechanism.…”

Section: Discussionmentioning

confidence: 99%

Temperature-dependent polarization effects in Ce:LiLuF

2001

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We report on tuned-laser, pump-probe-gain, and fluorescence yield studies of the effect that crystal temperature plays on the polarized emission characteristics of Ce:LiLuF. It was found that varsigma-polarized emission at the 327-nm fluorescence spectra peak is characterized by smaller laser pulse buildup times, higher small-signal gains, and smaller output powers than the pi-polarized 327-nm emission. We concluded that excited-state absorption (ESA) (and the resultant formation of color centers) is more severe for varsigma-polarized emission than for pi-polarized emission in this spectral region. We postulate that the enhancement in laser performance and crystal fluorescence observed with crystal cooling is due to narrowing of the ESA absorption band that reduces the probability of ESA and color-center formation.

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Section: Discussionmentioning

confidence: 99%

Temperature-dependent polarization effects in Ce:LiLuF

2001

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“…1). The first one is nonlinear two-photon absorption of pumping radiation resulting in ionization and subsequent reduction of activator-ions and photoconductivity (1). The second stage is thermalization and migration of photoelectrons and holes (2).…”

Section: Photodynamic Processes Into Active Mediamentioning

confidence: 99%

<title>Laser-related spectroscopy of KY<formula><inf><roman>3-x</roman></inf></formula>Yb<formula><inf><roman>x</roman></inf></formula>F<formula><inf><roman>10</roman></inf></formula>:Ce<formula><sup><roman>3+</roman></sup></formula> crystals</title>

et al. 2005

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Here spectral-kinetic properties of Ce3 ions and UV pumping induced color centers in KY3F10 (KYF) crystals are reported and discussed. The efficiency of crystal-chemical approach of UV pumping induced solarization processes inhibition in these crystals was shown. Laser oscillation was achieved on the Ce:KYF crystals which were considered earlier as unpromising as active medium due to its photochemical instability.

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“…There is much interest in Ce 3+ -doped ionic crystals for applications in UV scintillators [150][151][152][153][154][155][156][157][158][159][160] and lasers [13][14][15]26]. Cerium trivalent ions in various dielectric crystal hosts are characterized by excellent photochemical stability, high conversion efficiency, and low excited-state absorption coefficient.…”

Section: A Ceriummentioning

confidence: 99%

“…This is attractive due to its relative simplicity in comparison to existing nonlinear methods using gases and mole cules. In the case of optically pumped LiYF 4 :Ce 3+ and LaF 3 : Ce 3+ crystals [13][14][15], laser emission at 325 and 286 nm was obtained, respectively. Waynant and Klein [16,17] have reported the first laser action in the VUV from solid-state dielectric crystals.…”

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confidence: 99%