Laser frequency converter based on a BaYb2F8:Ho3+crystal. Stimulated emission at 2μ.

Antipenko, B. M.; Vorykhalov, I V; Sinitsyn, B V; Uvarova, T. V.

doi:10.1070/qe1980v010n01abeh009873

Cited by 14 publications

(2 citation statements)

References 3 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…It has been demonstrated that trivalent holmium ions can produce stimulated emission at wavelengths in the NIR region of the spectrum. 6,7 Johnson and Guggenheim 8 and Pollack et al 9 showed that, when codoped with ytterbium, holmium can convert infrared radiation into visible emission in the green region of the spectrum efficiently enough for stimulated emission to occur. According to Gilliland et al, 10 holmium can produce stimulated emission at 2.9 m when codoped with ytterbium, and the efficiency of laser action can be significantly increased by pumping into an Yb 3+ absorption band around 960 nm using a diode laser.…”

Section: Introductionmentioning

confidence: 99%

Absorption intensities, emission cross sections, and crystal field analysis of selected intermanifold transitions of Ho3+ in Ho3+:Y2O3 nanocrystals

Nash

Dennis

Ray

et al. 2009

Journal of Applied Physics

View full text Add to dashboard Cite

Optical absorption and emission intensities are investigated for Ho 3+ in nanocrystalline Ho 3+ :Y 2 O 3. Room temperature absorption intensities of Ho 3+ ͑4f 10 ͒ transitions in synthesized Ho 3+ :Y 2 O 3 nanocrystals have been analyzed using the Judd-Ofelt ͑JO͒ approach to obtain the phenomenological intensity parameters ⍀ 2 , ⍀ 4 , and ⍀ 6. The JO intensity parameters are used to calculate the spontaneous emission probabilities, radiative lifetimes, and branching ratios of the Ho 3+ transitions from the upper multiplet manifolds to the corresponding lower-lying multiplet manifolds 2S+1 L J of Ho 3+ ͑4f 10 ͒. The emission cross sections of the intermanifold transitions 5 F 4 , 5 S 2 → 5 I 8 ͑0.549 m͒ and 5 I 6 → 5 I 8 ͑1.204 m͒ have been determined. The room temperature fluorescence lifetimes of these transitions in Ho 3+ :Y 2 O 3 nanocrystals were measured. Radiative and fluorescence lifetimes are used to determine the quantum efficiency. The low temperature spectra are analyzed for the energy ͑Stark͒ level transitions of select 2S+1 L J multiplet manifolds of Ho 3+ ͑4f 10 ͒. The comparative study of Ho 3+ ͑4f 10 ͒ ions suggests that synthesized Ho 3+ :Y 2 O 3 nanocrystals could be an excellent alternative to single-crystal Ho 3+ :Y 2 O 3 for certain photonic applications, especially in the near infrared region.

show abstract

Section: Introductionmentioning

confidence: 99%

Absorption intensities, emission cross sections, and crystal field analysis of selected intermanifold transitions of Ho3+ in Ho3+:Y2O3 nanocrystals

Nash

Dennis

Ray

et al. 2009

Journal of Applied Physics

View full text Add to dashboard Cite

show abstract

“…6,7 It has been demonstrated that the trivalent holmium ions Ho 3+ ͑4f 10 ͒ can produce stimulated emission at wavelengths in the near infrared region of the spectrum. 8,9 Johnson and Guggenheim 10 and Pollack et al 11 showed that when codoped with ytterbium Yb 3+ , Ho 3+ ͑4f 10 ͒ can convert infrared radiation into visible emission in the green region of the spectrum through a process known as upconversion. With proper concentration ratios between the rare-earth ions, upconversion is possible so that stimulated emission can occur at longer wavelengths.…”

Section: Introductionmentioning

confidence: 99%

Intensity analysis and crystal-field modeling of Ho3+ in KPb2Cl5 host

Sardar

Chandrasekharan

Nash

et al. 2008

Journal of Applied Physics

View full text Add to dashboard Cite

Optical absorption and emission intensities are investigated for Ho3+ doped into single-crystal KPb2Cl5. Room temperature absorption spectra of Ho3+4f10, representing transitions from 5I8 to excited multiplet manifolds observed between 400 and 2100 nm, have been analyzed using the Judd–Ofelt JO model to obtain the phenomenological intensity parameters 2, 4, and 6. The JO intensity parameters are used to calculate the spontaneous emission probabilities, radiative lifetimes, and branching ratios of the Ho3+ transitions from the upper multiplet manifolds to the corresponding lower-lying multiplet manifolds 2S+1LJ of Ho3+. The room temperature fluorescence spectrum in the near infrared region is reported between 850 and 1550 nm. The emission cross section for the intermanifold transition, 5F5 → 5I7 0.98 m has been determined. The 8 K absorption spectrum was examined as well. The detailed structure observed in the absorption bands 5I7, 5S2, 5F4, and 5F3, was analyzed in terms of the crystal-field splitting of each manifold using a charge-compensation model first developed for Er3+ doped into KPb2Cl5. The optical and spectroscopic characteristics of Ho3+:KPb2Cl5 demonstrate that this material has potential as a laser host system at various wavelengths. © 2008 The American Physical Society. DOI: 10.1063/1.2919765 I

show abstract

Laser crystals and ceramics: recent advances

Kaminskii

2007

Laser & Photonics Reviews

370

236

View full text Add to dashboard Cite

After a brief examination of known insulating laser crystals and the stimulated emission channels of their generating activator ions, this article reviews recent advances in the development of novel lasing crystals and ceramics, as well as inorganic and organic nonlinear-laser crystals for χ (3) and cascaded χ (3) ↔ χ (2) frequency converters. Several new modern attractive technologies in the physics and techniques of crystalline lasers are also discussed.Section of the crystal structure of Na3Li (SeO4)

show abstract

Laser frequency converter based on a BaYb₂F₈:Ho³⁺crystal. Stimulated emission at 2μ.

Cited by 14 publications

References 3 publications

Absorption intensities, emission cross sections, and crystal field analysis of selected intermanifold transitions of Ho3+ in Ho3+:Y2O3 nanocrystals

Absorption intensities, emission cross sections, and crystal field analysis of selected intermanifold transitions of Ho3+ in Ho3+:Y2O3 nanocrystals

Intensity analysis and crystal-field modeling of Ho3+ in KPb2Cl5 host

Laser crystals and ceramics: recent advances

Contact Info

Product

Resources

About