Cavity Ring-Up Spectroscopy for Dissipative and Dispersive Sensing in a Whispering Gallery Mode Resonator

Yang, Yong; Madugani, Ramgopal; Kasumie, Sho; Ward, Jonathan; Chormaic, Síle Nic

doi:10.1007/978-3-319-64346-5_34

Cited by 5 publications

(9 citation statements)

References 38 publications

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“…Recently reported techniques in condensed-phase sensing use micro-resonators with optical quality factors of Q ≤ 10 8 to readout dispersive signals on nanosecond timescales 15,16 . As described by Yang et al 17 , those approaches clearly leverage heterodyne 18 and rapidly swept laser 19,20 cavity ring-down readout concepts developed decades ago to reduce technical noise and improve sensitivity. Collectively, the prior works in dispersive sensing utilize decaying signals which occur after the cavity driving field is effectively extinguished.…”

Section: Limits Their Ultimate Performance Here We Present Cavity Bui...mentioning

confidence: 99%

Cavity buildup dispersion spectroscopy

et al. 2021

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Measurements of ultrahigh-fidelity absorption spectra can help validate quantum theory, engineer ultracold chemistry, and remotely sense atmospheres. Recent achievements in cavity-enhanced spectroscopy using either frequency-based dispersion or time-based absorption approaches have set new records for accuracy with uncertainties at the sub-per-mil level. However, laser scanning or susceptibility to nonlinearities limits their ultimate performance. Here we present cavity buildup dispersion spectroscopy (CBDS), probing the CO molecule as an example, in which the dispersive frequency shift of a cavity resonance is encoded in the cavity’s transient response to a phase-locked non-resonant laser excitation. Beating between optical frequencies during buildup exactly localizes detuning from mode center, and thus enables single-shot dispersion measurements. CBDS can yield an accuracy limited by the chosen frequency standard and measurement duration and is currently 50 times less susceptible to detection nonlinearity compared to intensity-based methods. Moreover, CBDS is significantly faster than previous frequency-based cavity-enhanced methods. The generality of CBDS shows promise for improving fundamental research into a variety of light–matter interactions.

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Section: Limits Their Ultimate Performance Here We Present Cavity Bui...mentioning

confidence: 99%

Cavity buildup dispersion spectroscopy

et al. 2021

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“…We have used solid silica microspheres or hollow silica microbubbles for most of our sensing related work [2][3][4][10][11][12][13] . Figure 1 is a schematic representation of the method we use to fabricate single, silica microspheres from a section of optical fiber Figure 1.…”

Section: Whispering Gallery Resonator Fabricationmentioning

confidence: 99%

“…The microsphere is formed by tapering and melting the section of fiber; the final device is attached to a thin stem, the thickness and length of which we can control as desired. Such microspheres are used in our transient sensing proof-of-principle work 10 .…”

Section: Whispering Gallery Resonator Fabricationmentioning

confidence: 99%

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Whispering gallery resonators for optical sensing

et al. 2017

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In recent years, whispering gallery mode devices have extended their functionality across a number of research fields from photonics to sensing applications. Here, we will discuss environmental sensing applications, such as pressure, flow, and temperature using ultrahigh Q-factor microspheres fabricated from ultrathin optical fiber and microbubbles fabricated from pretapered glass capillary. We will discuss device fabrication and the different types of sensing that can be pursued using such systems. Finally, we will introduce the concept of using cavity ring-up spectroscopy to perform dispersive transient sensing, whereby a perturbation to the environment leads to a frequency mode shift, and dissipative transient sensing, which can lead to broadening of the mode, in a whispering gallery mode resonator.

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“…It is believed that CRUS can be used in the study of ultrafast phenomena such as protein folding, light harvesting and cavity quantum electrodynamics [13]. However, there is no detailed theory of CRUS that may limit its future application [14]. It is the purpose of this paper to provide a theory of CRUS.…”

Section: Introductionmentioning

confidence: 99%

Theory of cavity ring-up spectroscopy

Lin

2017

Opt. Express

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Cavity ring-up spectroscopy (CRUS) provides an advanced technique to sense ultrafast phenomena, but there is no thorough discussion on its theory. Here we give a detailed theoretical analysis of CRUS with and without modal coupling, and present exact analytical expressions for the normalized transmission, which are very simple under certain reasonable conditions. Our results provide a solid theoretical basis for the applications of CRUS.

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Cavity Ring-Up Spectroscopy for Dissipative and Dispersive Sensing in a Whispering Gallery Mode Resonator

Cited by 5 publications

References 38 publications

Cavity buildup dispersion spectroscopy

Cavity buildup dispersion spectroscopy

Whispering gallery resonators for optical sensing

Theory of cavity ring-up spectroscopy

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