Interference modulation of Q values in a cladded-fiber whispering-gallery-mode laser

Knight, Jonathan C.; Driver, H. S. T.; Robertson, G. N.

doi:10.1364/ol.18.001296

Cited by 20 publications

(8 citation statements)

References 13 publications

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“…DPP was prepared according to the previously reported procedures [28]. A Q-switched neodymium-doped yttrium aluminum garnet (Nd: YAG) laser (pulse duration 10 ns, repetition rate 10 Hz) with an output of 532 nm was used to pump the sample with a focus lens of f = 10 cm.…”

Section: Dpp Synthesis and Random Lasing Measurementsmentioning

confidence: 99%

Whispering-Gallery-Mode for Coherent Random Lasing in a Dye-Doped Polystyrene Encapsulated Silica-Glass Capillary

et al. 2020

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Dye-doped polystyrene (DDPS) encapsulated in a silica-glass capillary with a diameter of 300 μm was fabricated through radical polymerization of styrene within the capillary. The coherent random lasing (RL) with full width at half maximum (FWHM) of 0.36 nm and a quality factor of 1608 was produced in the DDPS with the capillary when pumping at 532 nm. However, the incoherent RL with FWHM of 6.62 nm and a quality factor of 92 was produced in the DDPS without the capillary. A detailed investigation on this phenomenon by changing the diameter of the capillary and core refractive index (RI) reveals that there exists a strong whispering gallery mode (WGM) resonance in the capillary, which helps generate the coherent RL. The findings may open up a new approach for the fabrication of highly efficient photonic devices.

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Section: Dpp Synthesis and Random Lasing Measurementsmentioning

confidence: 99%

Whispering-Gallery-Mode for Coherent Random Lasing in a Dye-Doped Polystyrene Encapsulated Silica-Glass Capillary

et al. 2020

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“…Interference modulation was observed from a layered microtube by Knight et al. . These microcavities provide superior two‐dimensional optical confinement with Q values in excess of 10 6 and bode well for low laser thresholds.…”

Section: Introduction To Tubular Microcavitiesmentioning

confidence: 95%

“…These microcavities provide superior two‐dimensional optical confinement with Q values in excess of 10 6 and bode well for low laser thresholds. The fused‐silica capillary tube is filled with a dye‐doped liquid having a high refractive index and this type of microcavity laser is called a core‐resonance capillary‐fiber WGMs laser . The hollow microstructure (microsphere) was suggested by Artemyev et al.…”

Section: Introduction To Tubular Microcavitiesmentioning

confidence: 99%

Optical microcavities with tubular geometry: properties and applications

Wang

Zhan

Huang

et al. 2013

Laser & Photonics Reviews

102

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Optical microcavities with whispering-gallery modes (WGMs) have large potential and, in particular, those with a tubular geometry have attracted increasing attention due to their special geometry and interesting properties such as trimmed resonant modes, simplicity as fluidic channels, threedimensionally (3D) mode confinement, unique evanescent wave, and so on. Optical microcavities with the tubular geometry meet the challenge of assembly of conductive, semiconductive and insulating materials into a tubular geometry, thus spurring multifunctional applications to optofluidic devices, optical microdevices like microlasers, and bio/chemical sensors. Fabrication methods such as the fiber-drawing method, rolled-up nanotechnology, electrospin technique, and template-assistant method have been developed to address the various requirements. These tubular optical microcavities enable researchers to explore and construct novel optical microdevices for a wide range of potential applications. This review describes the tubular optical microcavities from the perspectives of theoretical consideration, optical characterization, and potential applications.

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“…For l = 2 mode, Q 0 for the spherical shell as in Fig. 1 is 10 11 , degraded by a factor of 10 2 from 10 13 for the homogeneous sphere with the same outer radius a 0 =12 m as the shell. On the other hand, Q 0 practically does not change for l = 1 modes, being 10 18 for both hollow and homogeneous spheres.…”

mentioning

confidence: 95%

“…In experiments with layered microspheres 8-10 or microcylinders, [11][12][13][14][15] additional boundaries introduced interference or guiding effects so as to modify the cavity modes significantly. The resonance mode structure of a layered sphere was also studied theoretically in terms of the scattered light intensity and the energy density within and near the shell.…”

mentioning

confidence: 99%