Blue upconversion fluorozirconate fibre laser

Allain, J.Y.; Monerie, M.; Poignant, H.

doi:10.1049/el:19900113

Cited by 178 publications

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“…The glass samples studied have the following compositions in mol %: (48-x)NaPO 3 -12 BaF 2 -40 WO 3 -xTmF 3 , where xϭ0; 0.2; 0.4; 0.6; 0.8; 1.0. TmF 3 was synthesized by fluoration of Tm 2 O 3 at 400°C for 2 h with ammonium bifluoride NH 4 F, HF in a platinum crucible.…”

Section: A Experimentsmentioning

confidence: 99%

“…In fact, MP relaxation is expected to be relevant because these tungstate glasses have large cutoff phonon energy ͑Ϸ940 cm Ϫ1 ͒. 26 This interpretation allows us to determine the MP relaxation rate for 3 …”

Section: Excited State Lifetimesmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

“…[1][2][3][4][5] Laser emission and amplified spontaneous emission studies have been reported in crystals, bulk glasses, and optical fibers doped with Tm 3ϩ . [1][2][3] Frequency upconversion in a variety of Tm 3ϩ doped materials was also investigated in the past. [6][7][8][9][10][11][12][13] Of particular interest is the possibility of obtaining strong blue emission from Tm 3ϩ doped materials pumped in the red and in the infrared.…”

Section: Introductionmentioning

confidence: 99%

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Optical spectroscopy and frequency upconversion properties of Tm3+ doped tungstate fluorophosphate glasses

Poirier

Jerez

Araújo

et al. 2003

Journal of Applied Physics

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Tungstate fluorophosphate glasses of good optical quality were synthesized by fusion of the components and casting under air atmosphere. The absorption spectra from near-infrared to visible were obtained and the Judd-Ofelt parameters determined from the absorption bands. Transition probabilities, excited state lifetimes and transition branching ratios were determined from the measurements. Pumping with a 354.7 nm beam from a pulsed laser resulted in emission at 450 nm due to transition 1 D 2 → 3 F 4 in Tm 3ϩ ions and a broadband emission centered at Ϸ550 nm attributed to the glass matrix. When pumping at 650 nm, two emission bands at 450 nm ( 1 D 2 → 3 F 4 ) and at 790 nm ( 3 H 4 → 3 H 6 ) were observed. Excitation spectra were also obtained in order to understand the origin of both emissions. Theoretical and experimental lifetimes were determined and the results were explained in terms of multiphonon relaxation.

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Section: A Experimentsmentioning

confidence: 99%

Section: Excited State Lifetimesmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Optical spectroscopy and frequency upconversion properties of Tm3+ doped tungstate fluorophosphate glasses

Poirier

Jerez

Araújo

et al. 2003

Journal of Applied Physics

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“…Fiber lasers are potential laser sources for optical coherent communication (1) We believe that these lasers could also be used in spectroscopy with their wavelength region in the mid infra-red (2)(3) or in the visible range by up conversion (4). They have low threshold and can be pumped with diode lasers.…”

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confidence: 99%

Spectral and Temporal Behavior of an Erbium Doped Fiber Laser

1991

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Fiber Lasers and Amplifiers: High‐Power Operation

Zellmer

2005

Digital Encyclopedia of Applied Physics

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Since their invention in the beginning of the 1960s, fiber lasers have been improved from a helical shaped laser rod with an embedded waveguide structure to highly sophisticated laser systems that caused a revolution in telecommunications. In four decades of development, the wavelength range has been extended to the visible, ultraviolet, and mid‐infrared regime applying different rare earth–doped host glasses. Whereas diode laser pumped fiber lasers with emission in the visible spectral range became of great interest for applications in multimedia, measurement technique, medicine, and photofinishing, high‐power infrared, and high‐energy short‐pulse fiber lasers have been qualified for applications in thermal printing, marking, and material processing. However, nonlinear effects and the damage threshold of standard laser fibers hampered a straightforward scaling of the output power. Research is focused on these issues to develop scaling techniques for high‐power operation of infrared and visible upconversion fiber lasers in cw and pulsed modes. Nonlinear effects and power resistant fiber cores are factored into the fiber laser design. The fundamentals and the current state of the art of fiber lasers operating in the visible and infrared spectral ranges will be discussed in this work.

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Blue upconversion fluorozirconate fibre laser

Cited by 178 publications

References 0 publications

Optical spectroscopy and frequency upconversion properties of Tm3+ doped tungstate fluorophosphate glasses

Optical spectroscopy and frequency upconversion properties of Tm3+ doped tungstate fluorophosphate glasses

Spectral and Temporal Behavior of an Erbium Doped Fiber Laser

Fiber Lasers and Amplifiers: High‐Power Operation

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