Compound Glass Microsphere Resonator Devices

Yu, Jibo; Lewis, Elfed; Farrell, Gerald; Wang, Pengfei

doi:10.3390/mi9070356

Cited by 14 publications

(10 citation statements)

References 83 publications

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“…Next, an appropriately high-power laser was focused on the waist of the tapered fiber to form a microsphere with a diameter of about 41.8 μm. Compared to the method of heating and forming at the tip of a tapered fiber [27], the microspheres heated in the waist region have better axial symmetry.…”

Section: Preparation Of the Ho 3+ Doped Tellurite Glass And Fibermentioning

confidence: 99%

“…These drawbacks can be effectively overcome by using compound glasses or glass ceramics [19] as the host material, as they exhibit a low phonon energy, a high doping concentration, and high optical transmittance. A number of studies have focused on compound glass microcavity lasers and optical amplifiers [20]- [27] and several theoretical works have aimed at optimizing the microcavity design [28]- [30]. However, the influence of the host materials have often been overlooked in earlier experimental and theoretical investigations into microsphere lasers, including the significant aspects of characterization of the doped compound glass, Judd-Ofelt (J-O) theoretical analysis, and the study of the rate equations in rare-earth ion [31]- [33].…”

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confidence: 99%

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An Experimental and Theoretical Investigation of a 2 μm Wavelength Low-Threshold Microsphere Laser

Wang

et al. 2020

J. Lightwave Technol.

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We present our results on an experimental and theoretical investigation into a glass microsphere laser emitting at 2 µm wavelength. First, we fabricated Ho 3+ -doped tellurite glass fiber and measured the absorption and emission spectra, and the fluorescence lifetime. Using this fiber, a tellurite glass microsphere with a Q-factor of 2 × 10 6 was also prepared, and a single-mode laser output with a low threshold of 342 µW was observed using a 1150 nm laser as the pump source. The dynamic characteristics of the microsphere laser were studied theoretically by considering rare-earth ion spectroscopy, the rate equation of the rare-earth energy level, and the light-matter interactions in the microsphere. This work can be used to study laser emissions with low thresholds in rare-earth doped compound glass microresonators for a wide range of applications, such as gas sensing, integrated photonics, and medical surgery.

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Section: Preparation Of the Ho 3+ Doped Tellurite Glass And Fibermentioning

confidence: 99%

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confidence: 99%

An Experimental and Theoretical Investigation of a 2 μm Wavelength Low-Threshold Microsphere Laser

Wang

et al. 2020

J. Lightwave Technol.

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“…If fused silica represents one of the basic materials for the realisation of WGM microresonators with extremely high Q factor thanks to its excellent chemical durability and transparency in a wide range of wavelengths [200], soft glasses are now gaining an increasing interest as a bulk material for these WGM microcavities due to their better versatility in terms of material properties, low phonon energy, and high rare earth solubility [201][202][203][204][205].…”

Section: New Insight Towards the Development Of Optical Devices Loade...mentioning

confidence: 99%

Towards a Glass New World: The Role of Ion-Exchange in Modern Technology

2021

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Glasses, in their different forms and compositions, have special properties that are not found in other materials. The combination of transparency and hardness at room temperature, combined with a suitable mechanical strength and excellent chemical durability, makes this material indispensable for many applications in different technological fields (as, for instance, the optical fibres which constitute the physical carrier for high-speed communication networks as well as the transducer for a wide range of high-performance sensors). For its part, ion-exchange from molten salts is a well-established, low-cost technology capable of modifying the chemical-physical properties of glass. The synergy between ion-exchange and glass has always been a happy marriage, from its ancient historical background for the realisation of wonderful artefacts, to the discovery of novel and fascinating solutions for modern technology (e.g., integrated optics). Getting inspiration from some hot topics related to the application context of this technique, the goal of this critical review is to show how ion-exchange in glass, far from being an obsolete process, can still have an important impact in everyday life, both at a merely commercial level as well as at that of frontier research.

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“…(b) The waist region of tapered fiber is cleaved. (c) A tellurite microsphere is obtained by focusing a CO 2 laser beam on the end of the cleaved tapered[92].…”

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Tellurite Glass and Its Application in Lasers

Wang¹,

Jia²,

Lu³

et al. 2020

Advanced Functional Materials

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This chapter provides expert coverage of the physical properties of new noncrystalline solids-tellurite glass and the latest laser applications of the material-offering insights into innovative applications for laser and sensing devices, among others. In particular, there is a focus on specialty optical fibers, supercontinuum generation and laser devices, and luminescence properties for laser applications. This chapter also addresses the fabrication and optical properties and uses of tellurite glasses in optical fibers and optical microcavities, the significance of from near infrared (NIR) to mid-infrared (MIR) emissions and the development of tellurite glass-based microcavity lasers. The important attributes of these tellurite glasses and their applications in lasers were discussed in this chapter.

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Compound Glass Microsphere Resonator Devices

Cited by 14 publications

References 83 publications

An Experimental and Theoretical Investigation of a 2 μm Wavelength Low-Threshold Microsphere Laser

An Experimental and Theoretical Investigation of a 2 μm Wavelength Low-Threshold Microsphere Laser

Towards a Glass New World: The Role of Ion-Exchange in Modern Technology

Tellurite Glass and Its Application in Lasers

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