A quantitative analysis of the whispering-gallery-mode lasers in Er<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline" overflow="scroll" id="d1e668" altimg="si93.gif"><mml:msup><mml:mrow/><mml:mrow><mml:mn>3</mml:mn><mml:mo>+</mml:mo></mml:mrow></mml:msup></mml:math>-doped silica glass microspheres towards integration in SOI slotted photonic crystal waveguides

Nguyen, Van An; Pham, Van Dai; Hoang, Tung T.; Le, Huu Thang; Hoang, Thu Trang; Ngo, Quang Minh; Pham, Van Hoi

doi:10.1016/j.optcom.2019.01.011

Cited by 6 publications

(14 citation statements)

References 49 publications

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“…In Table 1 , we list some examples with various resonators and pedestal microsphere size combinations to design pedestals for three representative communication wavelengths ( h was set equal to one-quarter of the applicable wavelength). 66 …”

Section: Discussionmentioning

confidence: 99%

In Situ Assembling of Glass Microspheres and Bonding Force Analysis by the Ultraviolet–Near-Infrared Dual-Beam Optical Tweezer System

2021

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Microresonators show great potential as interlayer routing solutions for multilayered three-dimensional (3D) photonic communication networks. New techniques are needed for the convenient and in situ manipulation and immobilization of glass microspheres into functional structures. Herein, near-infrared (NIR) and ultraviolet (UV) lasers were used as optical tweezers to precisely arrange silica microspheres and UV-initiated immobilization in a 3D space. The NIR laser was used to trap targeted microspheres, and the UV laser was focused to immobilize the trapped microspheres in 3-methacryloxypropyltrimethoxysilane (MOPS) in ∼6 s. Optical force spectroscopy was performed using the optical tweezers to measure individual bond strength. Next, functional triangular pedestals were designed to flexibly control the gap space for vertical router applications in 3D photonic networks. Thus, the designed UV–NIR dual-beam optical tweezer system can be used to assemble arbitrary functional 3D structures, making it a valuable tool for microfabrication, photonics, and optical communication applications.

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Section: Discussionmentioning

confidence: 99%

In Situ Assembling of Glass Microspheres and Bonding Force Analysis by the Ultraviolet–Near-Infrared Dual-Beam Optical Tweezer System

2021

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“…According to the study of Ding et al [167] the compressive strength and relative density of the ceramics increased exponentially with the solid loading. Er 3+ -doped silica glass microspheres with diameters of ∼25-40 μm were fabricated by using an electrical discharge method by Nguyen et al [168]. In the study of Cheng et al [169], MCRT method, combined with Mie theory, was used to investigate the radiative transfer of radiative-cooling coatings with non-uniform size-distribution SiO 2 particles.…”

Section: Figure 22mentioning

confidence: 99%

Glass Microspheres

Karasu

DEMİREL

ÖZTUVAN

et al. 2019

El-Cezeri Fen Ve Mühendislik Dergisi

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Glass microspheres are microscopic spheres of glass manufactured for a wide variety of uses in thermal insulation coating, putty, plastic casting polyester, radome, synthetic foam, adhesives, printed circuit board substrate, bowling, fan blades, and caulking materials, emulsion explosives, golf, sealant, pipeline insulation materials, artificial marble, PVC, low density oil drilling, light cement etc. Glass microspheres are usually between 1 and 1000 micrometres in diameter, although the sizes can range from 100 nanometres to 5 millimetres in diameter. Microspheres are spherical particles that can be distinguished into two categories; solid or hollow. This paper presented a general overview of glass microspheres.

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“…These lasing emissions were characterized and shown to have very narrow emission linewidths. The achieved Q-factors can be up to 10 10 , indicating very long light storage times, achieving lasing actions at low threshold pump powers [10][11][12][13][14][15][16]. In recent work [10], Er 3+ -doped silica µSs with diameters of ~ 25-40 µm were successfully fabricated and WGM lasing emissions of single-or the multi-emitted modes in the wavelength (λ) range of 1520-1570 nm were quantitatively analyzed.…”

Section: Introductionmentioning

confidence: 99%

“…The achieved Q-factors can be up to 10 10 , indicating very long light storage times, achieving lasing actions at low threshold pump powers [10][11][12][13][14][15][16]. In recent work [10], Er 3+ -doped silica µSs with diameters of ~ 25-40 µm were successfully fabricated and WGM lasing emissions of single-or the multi-emitted modes in the wavelength (λ) range of 1520-1570 nm were quantitatively analyzed. The integration of these µS with silicon-on-insulator (SOI) slotted photonic crystal (PhC) waveguides was proposed and modelled using 3D-FDTD simulations.…”

Section: Introductionmentioning

confidence: 99%

“…Although there numerous papers have reported the experimental capability of rare-earth ions doped silica µS in generating optical signals or the numerical investigation of the WGM characteristics of the µS resonators [10][11][12][13][14][15][16][22][23][24][25]; only few works have comprehensively performed experimental, characterization, and numerical simulations.…”

Section: Introductionmentioning

confidence: 99%

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Effects of Size and Surrounding Medium on Whispering-Gallery-Mode Lasers in Er3+-Doped Silica Microspheres

Hoang

Pham

et al. 2021

Preprint

Self Cite

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This work reports the experimental fabrication and characterization of the Er3+-doped silica microspheres (mS) and numerical investigation of the effects of size and surrounding medium on the optical properties of whispering-gallery-mode (WGM) lasers. The heat melting method of two discharge electrodes was used to produce the Er3+-doped silica mSs of diameters up to several tens of micrometers. The 125-mm diameter single-mode optical fiber was tapered with a cone angle formed by chemical etching in hydrofluoric acid (HF) solutions. It was used to produce the mSs and couple the pumped laser into mS surface as well was coupled out the lasing emission. The WGM lasers at telecom regime of ~1520-1570 nm were characterized in both clockwise (CW) and counterclockwise (CCW) propagation directions. By adjusting the coupling gap between the tapered optical fiber and the mS surface, the selectivity of the multi- or single-emitted modes of the mS laser was achieved. We performed finite-difference time-domain (FDTD) simulations to examine the size dependence and analyze the effect of the surrounding medium’s refractive index on the optical characteristics, such as emission wavelength, intensity, as well as the shape of WGM lasing emission. The facile approach and quantitative investigation of this work has attracted much attention from researchers in the micro-photonic field and may be useful in many applications from tunable single-mode lasing sensing to optical micro-devices.

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A quantitative analysis of the whispering-gallery-mode lasers in Er3+-doped silica glass microspheres towards integration in SOI slotted photonic crystal waveguides

Cited by 6 publications

References 49 publications

In Situ Assembling of Glass Microspheres and Bonding Force Analysis by the Ultraviolet–Near-Infrared Dual-Beam Optical Tweezer System

In Situ Assembling of Glass Microspheres and Bonding Force Analysis by the Ultraviolet–Near-Infrared Dual-Beam Optical Tweezer System

Glass Microspheres

Effects of Size and Surrounding Medium on Whispering-Gallery-Mode Lasers in Er3+-Doped Silica Microspheres

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