Temperature compensation of dye doped polymeric microscale lasers

Manzo, Maurizio

doi:10.1002/polb.24321

Cited by 11 publications

(4 citation statements)

References 19 publications

(27 reference statements)

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“…The average Q factor value was 2.9 × 10 4 and was comparable with the Q factor found in microlasers fabricated with other techniques. The quality factor Q is a measure of how resolute a sensor based on optical microlasers [1][2][3][4][5]9,10]. This means that the fabrication method did not affect the quality factor of the microlasers, or that the variation of the Q factor was below the instrument resolution.…”

Section: Resultsmentioning

confidence: 99%

“…Microscale circular structures that enable whispering gallery modes (WGMs) have been employed as passive and active elements for different applications such as non-linear optics, low threshold microlasers, filters, and sensors [1][2][3][4][5][6][7][8][9][10][11][12]. Different materials have been used for the fabrication of these organized microstructures such as polymers, crystals, and other exotic materials [13][14][15].…”

Section: Introductionmentioning

confidence: 99%

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Solid State Optical Microlasers Fabrication via Microfluidic Channels

Manzo

Cavazos

2020

Optics

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In this paper, we propose the use of a microfluidic channel with flow focusing technique to fabricate solid state polymeric microlasers to precisely control sizes for mass production. Microlasers are made from a solution of UV curable polymer, namely polyethylene glycol diacrylate (PEGDA) with a molecular weight of 700 and rhodamine 6G laser dye at two different volumetric ratios (polymer to dye) of 4:1 and 2:1, respectively, which are used as the dispersed phase. A reservoir filled with liquid polydimethylsiloxane (PDMS) was used to cure the microlasers via UV lamp. A microchannel made of (PDMS) and size of 200 µm was used in this paper; mineral oil was selected as the continuous phase. Two experiments are conducted by fixing the pressure flow for the dispersed phase to 188 mbar and 479.9 mbar, respectively. In both experiments, the pressure of the continuous phase (mineral oil) was varied between 1666.9 mbar and 1996.9 mbar. The measurement of the fabricated microlasers’ size was performed with the aid of the MATLAB Image Processing Toolbox by using photographs taken with a CMOS camera. The tunability of the highest size, ranging from 109 µm to 72 µm, was found for the PEGDA to dye ratio of 2:1 (188 mbar) and average standard deviation of 1.49 µm, while no tunability was found for the 4:1 ratio (188 mbar). The tunability of the microlaser’s size, ranging from 139 µm to 130 µm and an average standard deviation value of 1.47 µm, was found for the 4:1 ratio (479.9 mbar). The fabricated microlasers presented a quality factor Q of the order 104, which is suitable for sensing applications. This technique can be used to control the size of the fabrication of a high number of solid state microlaser based UV polymers mixed with laser dyes.

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Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Solid State Optical Microlasers Fabrication via Microfluidic Channels

Manzo

Cavazos

2020

Optics

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“…This can be obtained by optimizing the tubular axial confinement in the future. 17 It has been reported that there is a negative thermal expansion coefficient in graphene 58 and the thermo-optic effect in R6G-doped microcavities, 59 which may influence the effective refractive index of the optoplasmonic cavity and contribute to the extra mode shift. Here, the extra mode shift induced by thermal effect can be negligible due to the relatively low laser power (2 mW) and good thermal conductivity of the ultrathin tube wall.…”

Section: ■ Results and Discussionmentioning

confidence: 99%

Graphene-Activated Optoplasmonic Nanomembrane Cavities for Photodegradation Detection

Yin

Pang²,

Wang

et al. 2019

ACS Appl. Mater. Interfaces

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Graphene, with its excellent chemical stability, biocompatibility, and capability of electric field enhancement, has a great potential in optical and optoelectronic applications with superior performances by integrating with conventional optical and plasmonic devices. Here, we design and demonstrate graphene-activated optoplasmonic cavities based on rolled-up nanomembranes, which are employed for in situ monitoring the photodegradation dynamics of organic dye molecules on the molecular level in real time. The presence of the graphene layer significantly enhances the electric field of hybrid optoplasmonic modes at the cavity surface, enabling a highly sensitive surface detection. The degradation of rhodamine 6G molecules on the graphene-activated sensor surface is triggered by localized laser irradiation and monitored by measuring the optical resonance shift. Our demonstration paves the way for real-time, high-precision analysis of photodegradation by resonance-based optical sensors, which promises the comprehensive understanding of degradation mechanism and exploration of effective photocatalysts.

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“…A change of the pressure applied to the internal wall of the pipe causes a mechanical strain on the perimeter of the resonator and, as a consequence, a shift of optical modes occurs as explained in detail in section 2 and section 3. Due to their high resolution, high sensitivity, and small size, WGM sensors have been developed to detect many different physical quantities including electric fields [13][14][15][16] , magnetic fields 15,17,18 , wall shear stress [19][20][21] , temperature [22][23][24] , applied loads 25,26 , displacement [27][28][29][30][31] , and radiant energy 32 among others. Section 2 of this paper explains how the WGM phenomenon is utilized in sensing applications.…”

Section: Introductionmentioning

confidence: 99%

Monitoring of pressurized pipelines with whispering gallery mode-based sensors

Rubino,

Agarwal

2024

Photonic Instrumentation Engineering XI

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The purpose of this work is to explore the use of optical resonators based on the Whispering Gallery Mode phenomenon (WGM), to determine the variation of the internal pressure of a pipeline due to leaks. Numerical experiments were performed to determine the sensitivity of disk-shaped optical resonators embedded in the wall of the pipe. A change in the internal pressure causes mechanical stress in the pipe wall and therefore a strain that is transferred to the optical resonator. This strain can be related to the shift of the optical modes (WGM shift) to determine the sensitivity of the sensor. The parameters investigated include the size of the resonator and the location within the thickness of the pipe wall. The results show a linear behavior of the WGM shift with the applied pressure, as well as a quadratic increase of the sensitivity with the resonator diameter.

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Temperature compensation of dye doped polymeric microscale lasers

Cited by 11 publications

References 19 publications

Solid State Optical Microlasers Fabrication via Microfluidic Channels

Solid State Optical Microlasers Fabrication via Microfluidic Channels

Graphene-Activated Optoplasmonic Nanomembrane Cavities for Photodegradation Detection

Monitoring of pressurized pipelines with whispering gallery mode-based sensors

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