An experimental study of the efficiency of optical energy transfer between Cr<sup>3+</sup>and Nd<sup>3+</sup>ions in yttrium aluminium garnet

Taylor, M.

doi:10.1088/0370-1328/90/2/319

Cited by 24 publications

(4 citation statements)

References 4 publications

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“…10) Neither could the very high conversion efficiency of Nd/Cr:YAG ceramic lasers 7) be explained by previous theory of Nd/Cr:YAG laser action. 8) This may be similar to an Yb-Er-doped fiber laser with an efficient energy transfer. 11) The lifetime and stimulated emission crosssection of Cr-doped Nd:YAG is an important issue.…”

Section: Introductionmentioning

confidence: 94%

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Effective Fluorescence Lifetime and Stimulated Emission Cross-Section of Nd/Cr:YAG Ceramics under CW Lamplight Pumping

Saiki

Motokoshi

Imasaki

et al. 2008

jjap

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Remarkable improvements in the lifetime of the Nd upper level and in the effective stimulated emission cross-section of Nd/ Cr:YAG ceramics have been theoretically and experimentally studied. Until recently, it had been thought that the long energy transition time from Cr ions to Nd ions of Nd/Cr:YAG adversely affects laser action, degrading optical-optical conversion efficiency under CW and flash lamp pumping. However, current research showed that high-efficiency energy transition has a positive effect on laser action. The effective lifetime is increased from 0.23 to 1.1 ms and the emission cross-section is effectively increased to three times for that of the conventional Nd:YAG. A small signal gain is significantly improved, and the saturation power density is reduced to 1/10 that of the Nd:YAG for the same pumping power density. A CW laser light generated in a laser diode (LD)-pumped 1064 nm Nd:YAG laser oscillator was amplified, and the measured output power was saturated. The output laser power calculated using theoretical saturation power density was consistent with the experimental results.

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Section: Introductionmentioning

confidence: 94%

“…7) No good overlapping of energy levels induced a low transition efficiency to transfer energy between Cr ions and Nd ions. 8) However, research on the energy transfer mechanism continues. Hong and Zhang reported a new energy transition mechanism of Nd/Cr:YAG crystals assisted by phonons that have good transition efficiency.…”

Section: Introductionmentioning

confidence: 99%

Effective Fluorescence Lifetime and Stimulated Emission Cross-Section of Nd/Cr:YAG Ceramics under CW Lamplight Pumping

Saiki

Motokoshi

Imasaki

et al. 2008

jjap

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“…doped with rare earths or uranium (U), for potential use in optically pumped lasers [30,31]. In addition, optical energy transfer was investigated for chromium (Cr) and neodymium (Nd) doubly doped into Yt 3 Al 5 O 12 (YAG) [32] and other Cr-doped materials [33].…”

Section: Historical Roadmap Of Co-dopingmentioning

confidence: 99%

A brief review of co-doping

et al. 2016

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Dopants and defects are important in semiconductor and magnetic devices. Strategies for controlling doping and defects have been the focus of semiconductor physics research during the past decades and remain critical even today. Co-doping is a promising strategy that can be used for effectively tuning the dopant populations, electronic properties, and magnetic properties. It can enhance the solubility of dopants and improve the stability of desired defects. During the past 20 years, significant experimental and theoretical efforts have been devoted to studying the characteristics of co-doping. In this article, we first review the historical development of co-doping. Then, we review a variety of research performed on co-doping, based on the compensating nature of co-dopants. Finally, we review the effects of contamination and surfactants that can explain the general mechanisms of co-doping.

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“…21 In addition, Kiss and Duncan further studied the non-radiative energy transfer from Cr 3+ to Nd 3+ in YAG. 22,23 Another characteristic of garnets is the cationic inversion that occurs between the tetrahedra and octahedra, which can be used to improve the luminescence performance of an activator, such as improving luminescence efficiency, broadening excitation or emission spectra. [24][25][26] In order to improve the probability of wide-spectrum NIR emission, an inverse-garnet structure can be used as a host material.…”

Section: Introductionmentioning

confidence: 99%

Designing a super broadband near infrared material Mg₃Y₂Ge₃O₁₂:Cr³⁺ using cation inversion for future light sources

et al. 2020

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An experimental study of the efficiency of optical energy transfer between Cr³⁺and Nd³⁺ions in yttrium aluminium garnet

Cited by 24 publications

References 4 publications

Effective Fluorescence Lifetime and Stimulated Emission Cross-Section of Nd/Cr:YAG Ceramics under CW Lamplight Pumping

Effective Fluorescence Lifetime and Stimulated Emission Cross-Section of Nd/Cr:YAG Ceramics under CW Lamplight Pumping

A brief review of co-doping

Designing a super broadband near infrared material Mg₃Y₂Ge₃O₁₂:Cr³⁺ using cation inversion for future light sources

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An experimental study of the efficiency of optical energy transfer between Cr3+and Nd3+ions in yttrium aluminium garnet

Cited by 24 publications

References 4 publications

Effective Fluorescence Lifetime and Stimulated Emission Cross-Section of Nd/Cr:YAG Ceramics under CW Lamplight Pumping

Effective Fluorescence Lifetime and Stimulated Emission Cross-Section of Nd/Cr:YAG Ceramics under CW Lamplight Pumping

A brief review of co-doping

Designing a super broadband near infrared material Mg3Y2Ge3O12:Cr3+ using cation inversion for future light sources

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An experimental study of the efficiency of optical energy transfer between Cr³⁺and Nd³⁺ions in yttrium aluminium garnet

Designing a super broadband near infrared material Mg₃Y₂Ge₃O₁₂:Cr³⁺ using cation inversion for future light sources