High-Q silk fibroin whispering gallery microresonator

Xu, Lei; Jiang, Xuefeng; Zhao, Guangming; Ma, Ding; Tao, Hu; Liu, Zhiwen; Omenetto, Fiorenzo G.; Yang, Lan

doi:10.1364/oe.24.020825

Cited by 55 publications

(39 citation statements)

References 38 publications

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“…As a sensing application of this portable testing system, we further performed a thermal sensing experiment by using a microtoroid on a silicon chip [33][34][35]. In this experiment, we placed another TEC under the microtoroid to change the local temperature by adjusting the TEC driver current.…”

Section: Thermal Sensing Experimentsmentioning

confidence: 99%

Phone-sized whispering-gallery microresonator sensing system

Jiang

Zhao

et al. 2016

Opt. Express

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Abstract:We develop a compact whispering-gallery-mode (WGM) sensing system by integrating multiple components, including a tunable laser, a temperature controller, a function generator, an oscilloscope, a photodiode detector, and a testing computer, into a phone-sized embedded system. We demonstrate a thermal sensing experiment by using this portable system. Such a system successfully eliminates bulky measurement equipment required for characterizing optical resonators and will open up new avenues for practical sensing applications by using ultra-high Q WGM resonators. References and links1. K. J. Vahala, "Optical microcavities," Nature 424(6950), 839-846 (2003). Xiong, "Robust spot-packaged microsphere-taper coupling structure for in-line optical sensors," IEEE Photon.

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Section: Thermal Sensing Experimentsmentioning

confidence: 99%

Phone-sized whispering-gallery microresonator sensing system

Jiang

Zhao

et al. 2016

Opt. Express

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“…Specifically, a high thermal sensing sensitivity of −1.17 nm/K has been realized in a silk fibroin microtoroid, which is attributed to the large thermal expansion effect. 127 An alternative experimental design for temperature sensing is the use of microdroplets, which can be made of a variety of materials, such as dye-doped cholesteric liquids, liquid crystals, 128 oils, 129 etc. The advantage of microdroplet-based thermal sensor is the ease of integration with conventional microfluidics, as well as diverse choices of materials with relatively high thermal refraction coefficients.…”

Section: Thermal Sensingmentioning

confidence: 99%

Optothermal dynamics in whispering-gallery microresonators

2020

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Optical whispering-gallery-mode microresonators with ultrahigh quality factors and small mode volumes have played an important role in modern physics. They have been demonstrated as a diverse platform for a wide range of photonics applications, such as nonlinear optics, optomechanics, quantum optics, and information processing. Thermal behaviors induced by power buildup in resonators or environmental perturbations are ubiquitous in high-quality-factor whispering-gallery-mode resonators and have played an important role in their operation for various applications. Here in this review, we discuss the mechanisms of laser field induced thermal nonlinear effects, including thermal bistability and thermal oscillation. With the help of the thermal bistability effect, optothermal spectroscopy and optical non-reciprocity have been demonstrated. On the other hand, by tuning the temperature of the environment, the resonant mode frequency will shift, which could also be used for thermal sensing/tuning applications. Thermal locking technique and thermal imaging mechanisms are discussed briefly. Last, we review some techniques to realize thermal stability in a high-quality-factor resonator system.

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“…Figure c illustrates optical‐grade silk solution synthesized from silk cocoons . Several silk‐based optical components such as waveguides, inverse opal, biostructural color mimicking, and high Q factor resonators have been reported. Especially, as silk fibroin is dissolved in water, organic dyes can be easily incorporated for active photonic components.…”

Section: Soft‐matter Microlasers: Soft Materialsmentioning

confidence: 99%

Microlasers Enabled by Soft‐Matter Technology

Wang

Sun

2019

Advanced Optical Materials

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Soft‐matter microlasers are an interesting part of soft‐matter photonics, which are based on liquids, liquid crystals, polymers, biological materials, and fabricated mainly by solution‐processing approaches. Soft‐matter microlasers comprehend a multitude of attractive features, including low‐cost, mechanical flexibility, wide range wavelength tunability and, in some cases, biocompatibility, and biodegradability. As such, they are recognized as versatile candidates for efficient light sources with enhanced performances and applications as ultrasensitive physical, chemical, and biological sensors. Here, the recent developments of soft‐matter microlasers are reviewed in time and the prospect in this field is provided. First, the characteristics of the representative soft‐matter microlasers are discussed with focus on their laser structures, lasing mechanisms, fabrication approaches, and gain material origins, followed by an introduction about the current cutting‐edge soft‐technologies that are applied in soft‐matter microlasers. Afterward, their potential applications as wavelength tunable sources, sensors, and displays are highlighted. Finally, the work is summarized and the prospect of soft‐matter microlasers for expanding this emerging research field is presented.

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High-Q silk fibroin whispering gallery microresonator

Cited by 55 publications

References 38 publications

Phone-sized whispering-gallery microresonator sensing system

Phone-sized whispering-gallery microresonator sensing system

Optothermal dynamics in whispering-gallery microresonators

Microlasers Enabled by Soft‐Matter Technology

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